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A300637
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Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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5, 90, 253, 1036, 4418, 23097, 124439, 666648, 3654138, 20086516, 110532082, 609984097, 3368944619, 18619630952, 102941658552, 569134936442, 3146764604501, 17399003486920, 96203071912124, 531934965247052
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OFFSET
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1,1
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COMMENTS
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Column 6 of A300639.
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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=5
..0..1..1..0..1..0. .0..1..0..0..0..1. .0..0..1..1..1..0. .0..0..1..0..1..0
..0..0..1..0..1..0. .0..1..1..1..1..1. .1..0..1..1..0..0. .0..1..0..1..0..0
..1..0..1..1..0..1. .1..1..1..1..1..1. .1..0..1..0..0..0. .1..0..1..0..0..0
..1..0..0..0..1..0. .0..0..0..1..0..0. .0..1..1..1..0..0. .1..0..0..0..1..1
..0..0..0..0..1..0. .1..1..0..0..1..1. .0..0..1..0..1..1. .1..1..0..1..0..0
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CROSSREFS
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Cf. A300639.
Sequence in context: A336783 A300433 A300767 * A301359 A352590 A037297
Adjacent sequences: A300634 A300635 A300636 * A300638 A300639 A300640
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Mar 10 2018
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STATUS
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approved
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