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A302223
Number of n X 7 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
8, 1934, 15569, 251254, 3018243, 42508145, 553097760, 7403262824, 97939043966, 1301831347709, 17275065368012, 229303687769069, 3043569120232324, 40395942785616147, 536209245725631300, 7116991167351864042
OFFSET
1,1
COMMENTS
Column 7 of A302224.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..0..1. .0..0..1..1..0..0..1. .0..0..1..1..1..1..0
..0..1..1..0..1..1..0. .0..1..0..1..0..1..1. .0..1..0..0..0..0..1
..0..0..1..0..1..1..0. .0..1..0..1..0..1..1. .0..1..1..0..1..1..0
..0..1..1..0..0..0..1. .0..0..1..0..0..0..1. .0..0..1..0..1..0..0
..0..0..1..1..1..1..0. .1..1..1..0..1..1..1. .1..1..0..0..1..1..1
CROSSREFS
Cf. A302224.
Sequence in context: A298845 A298652 A299606 * A302669 A302471 A303253
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2018
STATUS
approved