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A278019
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Number of 6Xn 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
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1
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0, 7734, 2072344, 699721024, 233160226732, 77589535205794, 25821185682305524, 8592958824701790896, 2859602832674813814112, 951630300604165753555590, 316687355530488310683471550, 105388483387006153868422307268
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=2
..0..2. .0..1. .0..1. .0..2. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1
..1..1. .1..2. .0..2. .1..0. .2..2. .1..2. .1..2. .0..2. .0..2. .0..2
..0..0. .1..2. .2..0. .1..2. .0..1. .0..1. .0..0. .2..2. .1..0. .2..1
..2..2. .1..0. .1..1. .0..2. .2..1. .2..2. .2..2. .0..1. .1..2. .0..2
..0..1. .1..2. .0..2. .2..0. .2..0. .2..0. .1..1. .2..1. .2..1. .0..2
..0..0. .1..0. .1..0. .2..1. .1..2. .1..1. .0..2. .2..0. .0..2. .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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