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A298965
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Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
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1
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4, 32, 219, 1575, 11283, 80972, 581057, 4169867, 29924442, 214748731, 1541115372, 11059607816, 79367792570, 569572322542, 4087459410676, 29333104460805, 210505091515979, 1510661567154766, 10841060204501930, 77799415112548482
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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: a(n) = 7*a(n-1) +3*a(n-2) -11*a(n-3) -11*a(n-4) +2*a(n-5) +19*a(n-6) -8*a(n-7) -12*a(n-8)
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EXAMPLE
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Some solutions for n=5
..0..0..0. .0..1..1. .0..1..1. .0..1..1. .0..0..1. .0..0..1. .0..0..1
..1..1..1. .1..0..1. .0..0..0. .1..0..1. .0..0..0. .0..1..0. .0..0..0
..1..1..0. .0..0..1. .0..0..1. .0..0..0. .1..1..1. .0..0..0. .1..1..0
..0..0..0. .0..0..0. .1..0..1. .0..0..1. .0..1..1. .0..1..1. .0..1..1
..0..1..0. .1..1..0. .0..0..0. .1..1..1. .0..0..1. .1..1..1. .0..0..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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