A302725 Number of n X 5 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 27, 74, 287, 1307, 4491, 17828, 80293, 304958, 1254491, 5534905, 22489246, 94732609, 413955598, 1740468900, 7436093945, 32346857005, 138259463124, 595133929409, 2583681234015, 11128738383880, 48080514602454

Offset

1,1

Comments

Column 5 of A302728.

Links

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

Example

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

Crossrefs

Cf. A302728.

Sequence in context: A120117 A152759 A302275 * A166102 A316754 A045491

Adjacent sequences: A302722 A302723 A302724 * A302726 A302727 A302728

Keyword

nonn

Author

R. H. Hardin, Apr 12 2018

Status

approved