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A302211
Number of n X 7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
1, 123, 72, 424, 1868, 11170, 55922, 291320, 1544411, 8168814, 43135601, 228337677, 1208744793, 6398223796, 33881994478, 179433657982, 950232876834, 5032989751367, 26658489563077, 141204904014504, 747985019374304
OFFSET
1,2
COMMENTS
Column 7 of A302212.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..0..0. .0..1..1..0..0..1..1. .0..1..1..1..0..0..0
..0..0..1..1..0..0..1. .1..1..0..0..1..1..0. .1..1..0..0..1..0..0
..1..0..0..1..1..0..1. .0..1..1..0..1..1..0. .0..1..1..0..1..1..1
..0..0..1..1..0..0..1. .0..1..1..0..0..1..1. .0..1..0..0..0..1..0
..1..0..0..1..1..0..0. .1..1..0..0..0..1..1. .1..1..1..0..0..1..0
CROSSREFS
Cf. A302212.
Sequence in context: A351406 A123171 A125097 * A308004 A192231 A341992
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2018
STATUS
approved