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A183837
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Number of (n+1)X(n+1) binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others
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1
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11, 129, 3357, 197133, 25468475, 7377050305, 4699303424280, 6677571801577027, 20920936413508511832, 145733864202975702001549, 2243086329393853088964598846, 76619744675820265499643398728545
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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 3X3
..1..1..1....1..1..1....1..1..0....1..0..0....1..0..1....1..1..0....1..0..0
..1..0..1....0..0..1....0..1..0....0..1..1....1..1..1....0..0..1....1..1..1
..1..1..1....1..1..1....0..1..0....1..0..1....0..0..1....1..1..0....0..1..0
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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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