A295050 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.

34, 747, 14691, 301306, 6171389, 125887202, 2573527520, 52573942625, 1074298644657, 21950201753662, 448510802455457, 9164288736541756, 187252966893295656, 3826106452646843405, 78178286183064352980

Offset

1,1

Comments

Column 7 of A295051.

Links

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

Example

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

Crossrefs

Cf. A295051.

Sequence in context: A028154 A028106 A028104 * A295378 A028023 A025190

Adjacent sequences: A295047 A295048 A295049 * A295051 A295052 A295053

Keyword

nonn

Author

R. H. Hardin, Nov 13 2017

Status

approved