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A184068
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Number of (n+1)X7 binary arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one
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1
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81, 225, 1884, 22452, 288744, 2663589, 19694227, 116690636, 572683182, 2305864084, 7782298646, 22382616957, 56141874238, 124734871342, 249667791032, 456693083041, 773758373131, 1229106077318, 1850219475619, 2663743231907
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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 3X7
..0..0..0..1..1..1..1....0..0..0..1..1..1..1....0..0..0..0..1..1..1
..0..1..1..0..1..1..1....0..1..1..0..0..0..1....0..0..1..1..0..0..0
..1..0..0..1..1..1..1....1..0..0..0..1..1..0....0..1..0..0..0..1..1
...
...1..2..2..3..4..4.......1..2..2..2..2..3.......0..1..2..2..2..2...
...2..2..2..3..4..4.......2..2..1..1..2..2.......1..2..2..1..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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