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A184204
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Number of (n+1)X7 binary arrays with no 2X2 subblock containing fewer than two 1s
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1
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3268, 158648, 6468501, 281420718, 12021784217, 516844071813, 22178227663588, 952294826074262, 40881902344878662, 1755168245685353119, 75352500961047758574, 3235038360513128954137, 138886585051318322739473
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 3X7
..0..1..1..1..1..0..0....0..1..1..1..0..0..1....1..0..1..1..0..0..1
..1..1..1..0..1..1..1....1..1..0..0..1..1..0....1..1..1..0..1..1..0
..0..0..1..0..1..0..0....0..0..1..1..1..1..0....1..1..1..1..1..1..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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