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A230794
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Number of (n+3)X(6+3) 0..3 arrays x(i,j) with each element 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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84052224, 128788339184, 312443804166400, 556151445605511168, 991594953505024518400, 1865179580060888014989264, 3461877651419949227125424704, 6376401388218250263517814866688
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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
..0..0..0..0..0..3..3..3..1....0..2..0..1..0..3..1..3..1
..3..1..1..1..2..0..0..2..2....1..1..3..1..2..0..0..2..2
..0..2..2..1..0..1..1..3..1....0..2..2..0..0..3..3..1..1
..1..1..1..3..0..0..2..0..2....1..1..1..3..2..2..2..2..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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