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A300687
Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
5, 307, 7187, 150558, 3179333, 67479838, 1431755828, 30366081812, 643942334598, 13656056835393, 289603801565185, 6141624884160687, 130245342969245790, 2762110283944810229, 58576019807838267185, 1242220527820363713104
OFFSET
1,1
COMMENTS
Column 6 of A300689.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0..1. .0..0..0..0..1..1. .0..0..0..0..1..0. .0..0..0..0..1..0
..0..1..1..0..0..1. .0..1..0..1..0..1. .0..1..0..1..0..1. .0..1..0..1..0..0
..0..0..1..1..0..0. .0..1..1..1..0..1. .0..1..1..0..1..0. .0..1..0..1..0..1
..0..1..0..1..0..0. .0..0..0..1..0..0. .0..0..1..1..1..0. .0..1..0..0..1..0
..1..0..0..1..1..1. .1..1..0..1..0..0. .1..1..0..0..1..0. .1..0..1..1..0..0
CROSSREFS
Cf. A300689.
Sequence in context: A323012 A342210 A300425 * A300610 A301352 A075983
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 11 2018
STATUS
approved