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A297958
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Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
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1
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8, 99, 245, 2359, 11623, 61204, 483929, 2884282, 18478260, 127847471, 829387894, 5485155575, 36667835017, 242733743793, 1613325886315, 10720998638200, 71201535319957, 473312060554166, 3144232961120243, 20890896841356141
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OFFSET
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1,1
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COMMENTS
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Column 7 of A297959.
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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EXAMPLE
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Some solutions for n=6
..0..1..0..1..1..0..1. .0..0..1..0..1..1..0. .0..1..0..0..1..1..1
..0..1..0..0..0..1..1. .1..1..1..0..0..1..0. .0..1..1..1..1..1..0
..1..0..0..0..1..0..0. .1..0..1..1..1..1..0. .1..0..1..0..0..0..1
..0..0..1..1..1..1..1. .0..0..1..0..1..0..1. .1..0..1..1..0..0..1
..1..1..0..0..1..0..1. .0..0..1..1..0..0..0. .1..0..1..1..0..1..0
..1..0..1..0..1..0..0. .0..1..0..1..0..1..1. .1..0..1..0..0..1..0
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CROSSREFS
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Cf. A297959.
Sequence in context: A228794 A211869 A159232 * A298774 A298581 A299573
Adjacent sequences: A297955 A297956 A297957 * A297959 A297960 A297961
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Jan 09 2018
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STATUS
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approved
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