The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A261939 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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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.
(history; published version)

#3 by R. H. Hardin at Sun Sep 06 07:53:28 EDT 2015

STATUS

editing

approved

#2 by R. H. Hardin at Sun Sep 06 07:53:23 EDT 2015

NAME

allocated for R. H. Hardin

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.

DATA

0, 147, 746, 7943, 50994, 367390, 2840132, 26703908, 234458622, 2153468514

OFFSET

1,2

COMMENTS

Column 4 of A261942.

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

allocated

nonn

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved

editing

#1 by R. H. Hardin at Sun Sep 06 07:48:52 EDT 2015

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved