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A297739
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Number of 7 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1's.
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1
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1, 13, 1026, 4676, 53173, 414651, 6241242, 56834907, 675663465, 6893539424, 81152925020, 872784930365, 9965405854651, 109677107185776, 1242862523673395, 13837791169587782, 156042319458946688, 1745891736485935186
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=5
..0..0..1..0..0. .0..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0
..0..1..1..1..1. .0..1..1..1..1. .1..1..1..1..1. .0..1..1..1..0
..1..1..1..1..0. .0..0..0..0..0. .0..1..0..1..0. .0..1..1..1..0
..0..0..1..0..0. .0..1..1..1..1. .0..1..0..0..0. .0..0..0..0..0
..1..1..0..1..1. .1..1..0..1..0. .1..1..1..0..0. .1..1..1..0..0
..0..1..0..1..0. .1..0..1..1..1. .1..0..1..0..0. .0..1..0..0..0
..0..0..1..0..0. .0..1..0..0..0. .0..1..0..0..0. .1..1..1..0..0
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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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