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A275088
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Number of nX6 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.
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1
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24, 864, 5304, 53132, 510680, 5038428, 48675088, 477786368, 4669603380, 45596095332, 445618877780, 4354996501396, 42558814118692, 415901491499748, 4064202093487220, 39716691445365360, 388129218814938872
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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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FORMULA
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Empirical recurrence of order 64 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..0..1..1..2..0. .0..1..2..2..1..1. .0..1..1..2..2..1. .0..0..1..1..2..0
..0..1..1..2..2..0. .1..0..2..2..1..0. .0..1..1..2..0..0. .2..0..1..2..2..0
..0..1..1..2..0..1. .1..2..2..1..0..0. .0..1..2..0..0..1. .0..1..1..2..2..0
..1..2..2..0..0..1. .1..0..2..1..0..2. .1..2..2..0..1..2. .0..0..2..2..0..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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