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A230785
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Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero
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1
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0, 8154, 4321988, 1986882996, 974259190594, 477873113683628, 234034971045993736, 114630033226085934620, 56147052629596501712940, 27501336797471553218433956, 13470402134572096286543298232
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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=2
..0..1..0..2..2....0..1..3..0..3....0..1..0..0..3....0..0..3..2..0
..3..3..2..3..2....3..2..1..2..1....3..2..1..1..2....0..1..2..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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