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A229933
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Number of nX7 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value 2-x(i,j)
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1
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63, 187211, 174306687, 183213209145, 189537122520529, 195955071996200947, 202902063153139301263, 210073683026638667977949, 217469679800421836913361917, 225130067038542417663060555935
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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 n=3
..0..0..0..0..2..1..1....0..0..0..0..2..1..1....0..0..0..0..0..2..0
..2..0..2..2..2..0..0....2..0..2..0..1..2..2....2..0..2..1..1..2..0
..0..0..1..1..1..0..2....0..0..0..2..0..0..2....0..0..2..0..0..2..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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