A302222 Number of nX6 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 537, 3425, 38736, 338204, 3420704, 32181643, 310963650, 2973099477, 28539661221, 273649285789, 2623829240629, 25163515492994, 241281374262345, 2313955414338689, 22188973218594562, 212790004250803955

Offset

1,1

Comments

Column 6 of A302224.

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. .0..0..0..0..1..1. .0..0..1..1..0..0. .0..0..1..0..1..0
..0..1..1..1..0..1. .0..1..1..0..0..1. .0..0..0..1..0..0. .0..1..1..1..0..1
..0..0..0..1..1..0. .0..0..1..1..0..0. .1..1..1..1..0..0. .1..0..0..1..0..0
..1..1..1..0..0..0. .0..1..1..0..0..1. .0..0..0..0..1..1. .0..0..1..1..1..0
..1..0..0..1..1..1. .1..0..0..1..1..0. .1..1..1..0..0..1. .0..0..1..1..0..0

Crossrefs

Cf. A302224.

Sequence in context: A249895 A241325 A210821 * A302668 A302470 A303252

Adjacent sequences: A302219 A302220 A302221 * A302223 A302224 A302225

Keyword

nonn

Author

R. H. Hardin, Apr 03 2018

Status

approved