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A183791
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Half the number of (n+1)X9 0..2 arrays with no 2X2 subblock having sum 4
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1
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24329052, 67714639662, 182672398106924, 497350558783784298, 1350253009910264801420, 3669246745844998053514738, 9967780407278401322169609464, 27081302315719663051228636805358
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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..0..2..2..0..0....0..0..0..0..0..1..0..0..2
..0..0..0..0..0..0..1..0..1....0..0..0..0..0..1..0..0..0
..0..0..0..0..0..2..0..0..0....0..0..0..0..0..2..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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