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A305020
Number of nX6 0..1 arrays with every element unequal to 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
1
0, 209, 2000, 62314, 1575677, 42306830, 1125868355, 30031715172, 801023698345, 21369269639027, 570045639446500, 15207204397589585, 405680765015268913, 10822338608421927292, 288707417174930265988, 7701843313415562030774
OFFSET
1,2
COMMENTS
Column 6 of A305022.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..0..1..0. .0..1..1..1..0..1. .0..1..1..0..0..1. .0..1..0..1..1..0
..0..1..1..1..1..1. .0..1..0..0..0..1. .0..1..1..0..0..1. .0..1..1..0..0..1
..0..1..1..0..0..0. .0..1..0..0..0..1. .0..1..0..0..1..1. .0..0..1..1..0..1
..1..1..0..0..0..0. .1..0..1..1..1..0. .1..1..0..1..1..0. .1..0..1..0..1..0
..0..1..0..1..1..1. .0..1..1..0..1..0. .0..0..1..0..1..0. .0..1..1..0..0..1
CROSSREFS
Cf. A305022.
Sequence in context: A157441 A304063 A305455 * A316684 A235731 A235512
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 23 2018
STATUS
approved