A302525 Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 27, 100, 539, 3683, 17546, 92603, 615351, 3268978, 18424095, 115923699, 662227998, 3859905731, 23738169083, 140046826890, 831779950595, 5066753588103, 30319152922838, 181816222213079, 1103244221147287

Offset

1,1

Comments

Column 5 of A302528.

Links

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

Example

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

Crossrefs

Cf. A302528.

Sequence in context: A343135 A343105 A200977 * A303407 A173491 A195799

Adjacent sequences: A302522 A302523 A302524 * A302526 A302527 A302528

Keyword

nonn

Author

R. H. Hardin, Apr 09 2018

Status

approved