A295378 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 4 1s.

34, 747, 15557, 325134, 6819658, 142860055, 2995361770, 62765357574, 1315649551906, 27574133240044, 577944446997342, 12113314594045600, 253888394444548265, 5321347134853621559, 111532355602550043873

Offset

1,1

Comments

Column 7 of A295379.

Links

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

Example

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

Crossrefs

Cf. A295379.

Sequence in context: A028106 A028104 A295050 * A028023 A025190 A160315

Adjacent sequences: A295375 A295376 A295377 * A295379 A295380 A295381

Keyword

nonn

Author

R. H. Hardin, Nov 21 2017

Status

approved