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A300463
Number of nX6 0..1 arrays with every element equal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
0, 19, 68, 540, 7456, 78195, 935121, 10913850, 127028268, 1493618674, 17461316528, 204700167234, 2397343348003, 28083486453043, 328982201480033, 3853663395457966, 45143074414088192, 528811530208812741
OFFSET
1,2
COMMENTS
Column 6 of A300465.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0..0. .0..0..1..1..0..0. .0..0..1..1..1..1. .0..0..1..1..0..0
..0..1..1..0..0..1. .0..0..1..1..0..1. .0..1..1..0..1..1. .0..0..1..0..0..1
..0..0..1..1..1..1. .0..0..1..0..1..1. .0..0..0..0..0..1. .0..0..0..0..1..1
..0..1..1..0..1..0. .0..1..1..0..0..0. .0..0..1..0..1..0. .1..1..1..1..0..0
..0..0..0..0..0..0. .1..1..0..0..0..0. .0..1..1..1..0..0. .1..1..1..0..0..0
CROSSREFS
Cf. A300465.
Sequence in context: A044157 A044538 A297226 * A204675 A007546 A007547
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 06 2018
STATUS
approved