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A298068
Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
1
0, 25, 253, 2197, 33869, 532282, 7794251, 117272307, 1752542571, 26390978567, 396816511614, 5963619560813, 89689074440813, 1348685504891460, 20280052387506779, 304959778790279486, 4585803356289623686
OFFSET
1,2
COMMENTS
Column 6 of A298070.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..1..1. .0..0..0..0..1..1. .0..0..0..1..1..0. .0..1..1..0..0..0
..0..1..1..0..0..1. .0..0..1..1..0..1. .0..1..0..1..0..0. .0..0..1..1..0..1
..1..0..1..1..1..0. .0..1..0..1..0..1. .1..1..0..1..1..0. .0..1..0..0..1..1
..1..1..0..0..0..1. .0..1..0..0..1..0. .1..1..0..1..0..1. .1..0..1..0..1..0
..1..1..1..1..1..1. .0..0..1..1..0..0. .1..0..0..0..1..1. .1..1..1..0..0..0
CROSSREFS
Cf. A298070.
Sequence in context: A042208 A143009 A090022 * A017450 A264267 A164756
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 2018
STATUS
approved