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Search: a261942 -id:a261942
Displaying 1-10 of 13 results found.
page 1 2
     Sort: relevance | references | number | modified | created      Format: long | short | data
A261936
Number of (n+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 2, 218, 7943, 5488030, 1247810761
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A261942.
LINKS
Table of n, a(n) for n=1..6.
EXAMPLE
Some solutions for n=4
..1..1..0..1..0....0..0..0..0..1....0..0..1..1..0....0..0..1..0..0
..1..1..1..0..0....1..1..0..0..0....1..0..1..0..0....1..0..0..0..0
..1..1..0..1..0....0..0..0..0..0....0..0..1..0..0....0..1..0..1..0
..0..1..1..1..1....1..1..1..1..0....1..1..0..0..1....1..0..1..0..1
..1..1..1..1..0....1..1..0..0..1....1..1..1..1..0....1..1..1..1..0
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261937
Number of (n+1)X(2+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 2, 5, 12, 31, 57, 112, 296, 833, 1889, 5015, 11625, 30782, 80154, 202448, 526705, 1410549, 3698903
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 2 of A261942.
LINKS
Table of n, a(n) for n=1..18.
EXAMPLE
Some solutions for n=4
..0..0..1....1..1..0....1..1..0....0..0..0....1..0..0....0..0..0....0..0..0
..0..0..1....0..0..0....1..0..0....1..0..0....1..0..0....0..0..1....0..0..0
..0..0..1....0..0..0....1..0..0....1..1..0....1..1..0....0..0..1....0..0..1
..1..1..0....0..0..1....0..0..1....0..0..1....0..0..1....1..1..0....1..1..0
..0..0..1....1..1..0....1..1..0....1..1..0....1..1..0....0..0..1....0..0..1
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261938
Number of (n+1)X(3+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
10, 61, 218, 1878, 9350, 57243, 352480, 2438528, 15405064, 102528319, 707008477
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A261942.
LINKS
Table of n, a(n) for n=1..11.
EXAMPLE
Some solutions for n=4
..0..0..0..1....1..0..0..1....0..1..0..0....1..0..1..0....1..0..0..1
..0..1..1..0....0..0..0..0....0..0..0..0....1..0..0..1....1..1..0..0
..1..0..0..0....0..1..1..0....0..1..1..0....1..0..1..0....1..0..1..0
..0..1..1..0....1..0..0..1....1..1..1..1....1..1..1..1....1..1..1..0
..1..1..1..1....1..1..1..1....0..1..1..0....1..1..1..1....1..1..1..1
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261939
Number of (n+1)X(4+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 147, 746, 7943, 50994, 367390, 2840132, 26703908, 234458622, 2153468514
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A261942.
LINKS
Table of n, a(n) for n=1..10.
EXAMPLE
Some solutions for n=4
..1..0..0..0..0....0..1..1..0..0....1..0..0..1..0....0..1..0..0..1
..0..0..0..0..0....0..0..1..0..0....0..0..0..0..0....0..0..1..1..0
..0..0..0..0..1....0..1..1..1..0....0..1..0..0..1....0..0..0..0..0
..0..1..1..1..0....1..1..0..0..1....0..1..1..0..0....1..1..1..1..0
..1..0..1..0..1....1..1..1..1..0....1..1..0..1..1....0..1..1..1..1
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261940
Number of (n+1)X(5+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
46, 1215, 10906, 351513, 5488030, 115507073, 2499416567
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A261942.
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=3
..0..0..1..0..0..1....0..1..1..0..1..0....0..0..0..0..0..0....0..1..0..0..1..0
..1..0..0..0..0..1....1..0..0..0..0..0....1..0..0..1..0..0....0..0..1..1..1..1
..0..1..1..1..1..0....1..1..1..1..1..1....0..1..1..0..1..1....1..1..0..0..0..0
..1..1..1..0..0..1....1..1..1..1..1..0....1..0..1..1..0..0....1..1..1..1..1..1
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261941
Number of (n+1)X(6+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 5826, 72186, 3016874, 52973290, 1247810761, 30673550964
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A261942.
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=3
..1..0..0..0..0..0..1....0..1..0..1..0..0..0....0..1..1..1..0..0..1
..1..1..1..0..0..1..1....0..0..1..1..1..0..0....0..0..0..1..0..0..0
..0..1..0..1..1..0..0....1..1..0..0..0..1..1....1..1..1..0..1..1..1
..1..1..1..0..0..1..1....0..1..1..1..1..0..0....1..1..1..1..0..0..1
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261943
Number of (1+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 0, 10, 0, 46, 0, 202, 415, 852, 1739, 3532, 0, 14484, 29256, 58994, 0, 239144, 0, 966551, 1941541, 3898357, 7824445, 15699345, 31490743, 63151055, 126614175, 253804613, 508678162, 1019341796
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 1 of A261942.
LINKS
Table of n, a(n) for n=1..29.
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261944
Number of (2+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 2, 61, 147, 1215, 5826, 28021, 110420, 527295, 2326284, 9514894, 38982570, 165423942, 702887228, 2961470604, 11652281882, 46921585497, 193805455945
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 2 of A261942.
LINKS
Table of n, a(n) for n=1..18.
EXAMPLE
Some solutions for n=4
..0..1..0..1..0....0..1..1..1..1....0..1..0..1..0....1..1..1..1..0
..1..0..1..0..1....1..0..0..0..0....1..0..1..0..1....0..1..1..1..1
..1..1..0..1..1....0..1..1..1..1....0..1..1..1..0....1..1..1..1..0
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261945
Number of (3+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 5, 218, 746, 10906, 72186, 588090, 3656900, 26647829, 180803752, 1093944096, 6533839983, 43705331783
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 3 of A261942.
LINKS
Table of n, a(n) for n=1..13.
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....1..1..1..1..0....1..1..0..0..0....0..1..1..1..0
..0..1..1..1..1....1..0..0..0..0....1..0..1..0..0....1..0..1..0..0
..1..0..1..0..0....0..1..1..1..1....0..1..1..1..1....1..1..0..1..1
..0..1..1..1..1....1..1..1..1..0....1..1..1..1..0....1..1..1..1..0
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
A261946
Number of (4+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.
+10
0
0, 12, 1878, 7943, 351513, 3016874, 64650845, 773758878, 10301327801
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 4 of A261942.
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
Some solutions for n=4
..1..0..0..0..0....0..1..0..0..0....1..0..1..0..0....0..0..1..1..0
..0..1..1..0..0....0..1..0..1..0....0..1..0..0..0....0..0..0..0..0
..1..0..1..0..0....0..1..0..0..1....0..1..0..1..0....0..1..0..0..0
..1..1..0..1..1....1..1..1..1..0....1..0..1..0..1....1..1..0..1..1
..1..1..1..0..0....1..1..0..1..1....1..1..1..1..0....1..1..1..1..0
CROSSREFS
Cf. A261942.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved
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