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A269151
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Number of n X 7 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
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1
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5832, 2270592, 642676704, 167970539096, 42119837369168, 10275566914040000, 2456638851763181776, 578202261783376052264, 134401513805944458613328, 30926068491391277680083776, 7056680383368519798619918656
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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
..2..2..0..1..2..3..1. .0..3..3..3..1..3..3. .0..2..3..2..2..1..3
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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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