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A184502
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1/12 the number of (n+2)X6 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last
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1
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30024, 66822, 161097, 425814, 1315452, 4331259, 15153995, 58565527, 233542628, 958384599, 4189460597, 18476576859, 82379095826, 383160981423, 1781088725879, 8305119913347, 39878032210644, 190755038519986, 912250852488787
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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 with a(1,1)=0 for 4X6
..0..0..0..2..2..0....0..0..0..1..0..0....0..0..0..0..1..2....0..0..0..0..0..2
..1..2..2..2..2..2....1..0..2..0..0..2....0..1..2..0..0..0....1..0..1..0..1..0
..0..2..0..1..0..0....2..0..2..2..0..2....0..2..2..0..2..2....0..1..2..1..0..1
..2..2..0..0..0..0....0..0..0..1..0..0....2..0..2..2..1..0....1..1..0..1..1..2
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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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