A316122 Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 99, 391, 2524, 26626, 283238, 2525039, 25192165, 261795432, 2591075341, 26052154653, 265234758788, 2677888952446, 27053428148437, 274176126652529, 2775782288833705, 28090747792390254, 284466556842037225

Offset

1,2

Comments

Column 7 of A316123.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..0..1..1..1..0..1..0. .0..0..0..0..1..1..0. .0..0..1..0..0..0..1
..1..0..0..0..1..0..1. .1..1..1..0..0..1..0. .1..1..0..1..1..1..0
..0..1..1..1..1..1..1. .1..0..0..0..0..0..0. .1..1..1..0..0..1..0
..1..0..0..0..0..0..1. .0..1..1..1..0..1..0. .1..1..0..1..1..0..0
..0..1..1..1..1..1..0. .1..0..0..0..1..0..1. .1..1..0..0..0..0..1

Crossrefs

Cf. A316123.

Sequence in context: A156757 A027579 A304675 * A157659 A273187 A322830

Adjacent sequences: A316119 A316120 A316121 * A316123 A316124 A316125

Keyword

nonn

Author

R. H. Hardin, Jun 24 2018

Status

approved