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A184070
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Number of (n+1)X9 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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160, 529, 5800, 126978, 4136338, 116690636, 2770530466, 52431215293, 815858815795, 10481797492543, 110945811109376, 969268941798697, 7097493179383915, 43883325663965862, 231088111095174435
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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 3X9
..0..0..0..0..1..1..1..1..1....0..0..1..1..1..1..1..1..1
..0..0..1..1..0..0..0..1..1....0..1..0..0..0..0..0..1..1
..0..1..0..1..1..1..1..1..1....0..1..1..1..1..1..1..0..1
...
...0..1..2..2..2..2..3..4.......1..2..2..2..2..2..3..4...
...1..2..3..3..2..2..3..4.......2..3..2..2..2..2..2..3...
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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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