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A235770
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Number of (n+1)X(5+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise
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1
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660, 5643, 47501, 377890, 2931878, 21858973, 157282139, 1084189363, 7146773223, 45042182253, 271113821758, 1563455298942, 8638261431109, 45901448960399, 234728708263457, 1159091427872949, 5532056848492928, 25589861774420059
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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=3
..0..0..1..1..0..0....1..1..0..1..1..0....1..1..0..1..0..0....1..0..1..0..0..0
..1..1..0..0..0..1....0..0..1..0..0..0....1..1..0..1..0..0....0..1..0..1..1..0
..1..1..0..0..0..0....1..1..0..1..1..1....0..1..1..1..1..0....1..0..1..0..0..0
..1..0..1..1..0..0....1..0..1..0..0..0....1..1..0..1..0..0....1..1..0..1..0..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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