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A203605
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Number of nX3 0,1 arrays with adjacent row and column sums unequal
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2
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2, 20, 126, 728, 4374, 25788, 149794, 866692, 4989242, 28600208, 163479486, 932166044, 5304572502, 30137247224, 170986774826, 968989758580, 5485913976922, 31032085382272, 175409808771550, 990873450379996
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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 4X4
..1..0..0....0..0..0....1..0..1....1..1..1....1..1..1....0..0..0....1..0..0
..0..1..1....0..0..1....1..1..1....0..1..1....0..0..1....1..1..0....0..0..0
..1..1..1....1..0..1....0..1..0....1..1..1....1..0..1....0..0..1....0..1..0
..0..1..0....1..0..0....1..0..1....1..1..0....1..0..0....1..0..1....0..1..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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