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A188308
Number of (n+1)X7 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums
0
1332, 71888, 1514522, 37040856, 878907878, 21615769428, 520845610752
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A188311
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for 3X7
..0..1..0..0..0..1..0....0..1..1..1..1..0..0....1..1..0..1..0..1..1
..0..0..0..0..0..1..0....1..1..0..1..0..1..1....1..1..1..0..1..1..0
..0..1..1..1..0..0..0....0..1..0..1..1..0..0....1..1..0..0..0..1..1
CROSSREFS
Sequence in context: A050646 A044882 A158743 * A185494 A035862 A003907
Adjacent sequences: A188305 A188306 A188307 * A188309 A188310 A188311
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2011
STATUS
approved

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Last modified November 7 19:25 EST 2024. Contains 377536 sequences.
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