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A269826
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Number of nX5 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.
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1
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1280, 462680, 90748696, 16644595392, 2840332868960, 467693538063508, 74936429415811576, 11771832152564634464, 1821445245786662249776, 278444152926792624952684, 42152783102393213438270928
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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
..1..2..4..4..0. .1..3..0..1..4. .0..3..2..2..1. .1..0..1..0..4
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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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