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A298150
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Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
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1
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5, 16, 18, 196, 497, 2618, 15694, 74848, 398520, 2175661, 11395331, 60709714, 325569321, 1730448253, 9227502184, 49280674716, 262657795284, 1400914746703, 7474498985522, 39861303261615, 212613780799718, 1134133138126240
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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 66 (see link above)
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EXAMPLE
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Some solutions for n=7
..0..0..1..0. .0..1..1..0. .0..0..1..0. .0..1..1..0. .0..1..0..1
..0..0..1..0. .1..1..0..1. .0..0..1..0. .1..1..1..0. .0..1..0..1
..0..1..1..1. .1..0..0..0. .1..0..1..1. .0..1..0..0. .1..1..0..0
..1..0..1..0. .1..1..0..1. .0..0..1..1. .1..0..0..0. .0..1..0..0
..1..1..1..0. .0..1..0..0. .1..0..1..1. .1..1..0..1. .1..1..0..1
..0..1..0..0. .1..1..1..0. .0..0..1..0. .0..1..0..0. .1..0..0..0
..0..1..0..0. .1..1..0..1. .1..0..0..1. .1..0..0..1. .0..1..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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