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A269185
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Number of nX7 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
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1
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5832, 739008, 154606864, 29881402560, 5665397992608, 1052109184130840, 192247800095048896, 34666986301328823344, 6183899646434421899984, 1093211509437280016564192, 191809173606551182685393776
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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=1
..3..0..0..1..0..2..0. .3..2..2..1..3..1..1. .0..2..1..1..0..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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