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A296633
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Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.
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1
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21, 286, 3581, 44783, 565149, 7121315, 89713772, 1130293195, 14240708558, 179419300176, 2260512981540, 28480330069267, 358825298187419, 4520860415119973, 56958579395700728, 717624409759413294
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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 n=4
..1..1..0..0..0..0. .0..0..0..0..1..0. .0..0..0..1..0..0. .1..0..0..0..0..0
..1..0..1..1..1..0. .0..1..0..0..0..1. .1..1..0..0..0..0. .0..1..1..0..0..0
..0..0..1..1..0..1. .0..0..0..0..1..1. .1..0..0..1..1..0. .0..1..0..0..0..0
..0..0..1..0..1..1. .0..0..0..0..0..0. .0..1..0..1..0..0. .0..0..1..0..0..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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