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A251209
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Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to a nonzero multiple of 2
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1
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369920, 29664576, 3233921644, 447556857260, 71260903869938, 12268979186486228, 2203266860629332142, 404818450444861746682, 75308826327253124055454, 14104883228288092210397394
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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..2..1..1..0..1..1....0..2..1..0..0..1..0..1....0..1..2..1..1..0..1..2
..1..1..1..2..0..1..2..2....2..2..1..2..0..1..2..1....2..1..2..1..1..2..1..2
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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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