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A185797
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Number of (n+1) X 9 binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum.
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1
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11220, 20864, 47776, 164576, 433296, 1379208, 3629540, 13289252, 35756268, 128976744, 346446144, 1333284060, 3588481008, 13880081488, 37224984364, 148837476180, 398218723908, 1607711747604, 4285914451420, 17630641010960
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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 3 X 9
..0..0..0..0..0..1..1..0..1....0..1..1..1..0..1..1..0..0
..1..1..0..0..1..1..1..0..0....0..1..0..0..0..1..1..0..1
..1..0..1..0..1..1..0..0..0....0..0..1..0..0..0..0..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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