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A318348
Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
13, 18, 41, 55, 136, 345, 842, 2167, 5544, 14244, 36572, 94381, 243153, 629090, 1626951, 4215276, 10927245, 28335336, 73504819, 190696269, 494767839, 1283719592, 3330784937, 8642038996, 22422738925, 58177733612, 150947560518
OFFSET
1,1
COMMENTS
Column 6 of A318350.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..1. .0..1..1..1..1..0. .0..0..0..0..0..0. .0..0..0..0..1..1
..0..0..0..0..1..1. .0..0..1..1..1..1. .0..0..0..0..1..0. .0..0..0..0..0..1
..1..0..0..0..0..1. .0..0..0..1..1..1. .0..0..0..0..0..0. .0..1..0..0..0..0
..1..1..0..0..0..0. .0..0..0..0..1..1. .1..0..0..0..0..0. .0..0..0..0..0..0
..1..1..1..0..0..0. .1..0..0..0..0..1. .1..1..0..0..0..0. .0..0..0..0..0..0
CROSSREFS
Cf. A318350.
Sequence in context: A037158 A318080 A066469 * A197704 A218626 A119149
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 24 2018
STATUS
approved