Search: id:a302385
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A302385
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Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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+0
1
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0, 361, 16451, 514655, 20993054, 849467774, 34271733937, 1383359844850, 55869034107773, 2256277862917399, 91119808168300632, 3679882775189443109, 148612776964178660961, 6001755395115442008533, 242382043501326104374522
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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..0..1..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0
..1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1
..0..1..1..0..1. .0..1..1..0..0. .0..1..1..1..0. .1..1..0..1..1
..0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..0. .0..1..0..0..1
..1..1..0..1..1. .1..1..1..1..1. .1..1..0..0..1. .1..0..1..0..1
..0..0..1..0..1. .1..0..0..1..1. .0..0..1..1..1. .0..0..0..1..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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