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A305221
Number of nX6 0..1 arrays with every element unequal to 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
1
0, 33, 92, 581, 3759, 32193, 212231, 1501520, 11428272, 82788295, 601647440, 4447036141, 32663330138, 239187497366, 1758196300720, 12921796884470, 94848943898420, 696669449190400, 5118201492429397, 37589849155190822
OFFSET
1,2
COMMENTS
Column 6 of A305223.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..1. .0..1..0..0..0..0. .0..1..1..1..1..0. .0..1..1..0..0..0
..1..1..1..0..1..0. .1..1..0..1..1..1. .1..0..0..0..0..1. .0..1..0..0..1..1
..0..1..0..0..1..0. .1..0..0..0..0..1. .0..1..1..1..1..1. .0..0..0..0..0..1
..1..1..1..0..1..0. .1..0..1..0..0..1. .0..0..1..0..0..0. .1..1..0..1..1..0
..0..0..0..0..0..1. .0..1..1..0..0..1. .1..0..1..1..0..1. .0..1..0..0..1..0
CROSSREFS
Cf. A305223.
Sequence in context: A231460 A114069 A350220 * A316799 A165378 A098938
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 27 2018
STATUS
approved