A299720 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 1192, 33804, 2501312, 174287007, 12889348273, 971255866215, 73433529818762, 5581654300729422, 424650044923971872, 32336302707253949948, 2463144123049504957119, 187653550017667556025377

Offset

1,2

Comments

Column 7 of A299721.

Links

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

Example

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

Crossrefs

Cf. A299721.

Sequence in context: A299059 A299820 A251169 * A300341 A040104 A103171

Adjacent sequences: A299717 A299718 A299719 * A299721 A299722 A299723

Keyword

nonn

Author

R. H. Hardin, Feb 17 2018

Status

approved