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A304469
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Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.
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1
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16, 120, 316, 1100, 5063, 18879, 68338, 289227, 1157258, 4393415, 17723784, 71637043, 280423241, 1116468033, 4495393108, 17861030500, 71097750334, 285225505263, 1140055524713, 4550513334300, 18230524808865, 73024146835806
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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 84 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..0..0..0..0. .0..1..1..0..1. .0..0..1..0..0. .0..0..1..0..0
..0..0..0..1..0. .0..0..1..0..0. .1..0..1..1..0. .0..1..1..0..0
..0..0..0..1..1. .0..0..0..0..0. .1..1..1..1..1. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..1..1. .1..1..1..0..0. .0..1..0..0..1
..0..0..0..0..1. .0..0..0..1..0. .1..1..1..1..0. .1..1..0..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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