A295528 Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.

12, 280, 4080, 64189, 1012315, 16031147, 253594307, 4003959566, 63279327977, 1000139739583, 15804787030137, 249762291976009, 3947048440634688, 62375786616766976, 985731805754249812, 15577646241372914358

Offset

1,1

Comments

Column 5 of A295531.

Links

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

Example

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

Crossrefs

Cf. A295531.

Sequence in context: A239780 A351765 A295037 * A166337 A183767 A009604

Adjacent sequences: A295525 A295526 A295527 * A295529 A295530 A295531

Keyword

nonn

Author

R. H. Hardin, Nov 23 2017

Status

approved