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A304667
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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13, 105, 123, 544, 1926, 5101, 15421, 48922, 143214, 444335, 1400682, 4214900, 12959240, 40298167, 122726980, 376705486, 1164728930, 3566783028, 10948433283, 33744267108, 103560501696, 317995281524, 978582172848, 3005885925021
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OFFSET
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1,1
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COMMENTS
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Column 6 of A304669.
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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..0..0..0..0..0. .0..0..1..1..1..1. .0..0..0..0..0..0. .0..0..1..0..0..0
..0..0..0..0..0..0. .0..0..0..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..1
..0..0..0..0..0..0. .1..0..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0
..0..0..0..0..0..0. .1..1..1..1..1..1. .1..0..0..0..0..0. .0..0..1..0..0..0
..1..0..0..0..1..0. .1..1..1..1..1..1. .0..0..0..0..0..0. .0..1..1..0..1..0
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CROSSREFS
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Cf. A304669.
Sequence in context: A303967 A304929 A041316 * A306170 A305345 A316613
Adjacent sequences: A304664 A304665 A304666 * A304668 A304669 A304670
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, May 16 2018
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STATUS
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approved
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