A295605 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1s.

34, 883, 26249, 892086, 34416318, 1412108105, 59768294027, 2568256527624, 111128604535696, 4823594242340185, 209666812700819997, 9119400828820574160, 396760256446506930379, 17264203925782434554401, 751260433475452367409937

Offset

1,1

Comments

Column 7 of A295606.

Links

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

Example

Some solutions for n=3
..1..1..1..0..0..1..0. .0..0..1..1..0..0..1. .0..0..0..0..0..0..1
..1..1..1..1..0..0..1. .0..0..1..1..0..0..0. .0..1..0..0..0..0..0
..1..1..1..1..0..1..0. .1..0..1..1..0..1..0. .1..0..1..0..0..0..0

Crossrefs

Cf. A295606.

Sequence in context: A192094 A297337 A295351 * A244654 A214169 A212787

Adjacent sequences: A295602 A295603 A295604 * A295606 A295607 A295608

Keyword

nonn

Author

R. H. Hardin, Nov 24 2017

Status

approved