A295715 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 2 or 4 1s.

128, 10329, 786804, 61023234, 4725935539, 366212961052, 28373170135641, 2198260487199227, 170316434139541414, 13195718014328336932, 1022372882849049101482, 79211033971975236785553

Offset

1,1

Comments

Column 7 of A295716.

Links

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

Example

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

Crossrefs

Cf. A295716.

Sequence in context: A297373 A283697 A283129 * A282398 A297101 A181250

Adjacent sequences: A295712 A295713 A295714 * A295716 A295717 A295718

Keyword

nonn

Author

R. H. Hardin, Nov 26 2017

Status

approved