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A295269
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Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1's.
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2
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2, 11, 164, 6659, 748740, 230659662, 196091375073, 458510348625561, 2951683183977839155, 52303382279027148884728, 2551191530898428081696382880, 342537007989863347885673784022387
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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=4
..0..0..0..1....0..0..1..1....0..1..0..1....1..0..1..0....0..0..0..1
..0..0..1..0....1..0..0..0....0..0..1..0....0..1..0..1....0..0..0..0
..0..1..0..1....0..0..1..0....0..0..0..0....1..1..1..0....0..0..0..0
..0..1..0..0....0..1..0..1....1..0..1..1....0..1..0..1....0..0..1..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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