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A251325
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Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having one or two 1s
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1
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4894, 142600, 3866110, 114913804, 3265612528, 96040080726, 2766068478692, 80823086238398, 2339684264865070, 68156224595625074, 1977223548390300748, 57518662922203116468, 1670177784987749442158, 48556849381031862099676
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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=2
..1..0..0..0..0..1..1..0....0..0..0..1..0..0..0..0....0..1..0..1..0..1..1..0
..0..1..1..0..1..0..0..0....0..1..0..1..0..1..1..0....0..0..0..0..0..0..0..1
..1..0..0..0..0..1..1..1....0..0..1..0..0..0..0..0....0..1..1..0..1..1..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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