A302667 Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 146, 760, 6110, 42367, 316977, 2320879, 17037458, 125456575, 920577056, 6771994976, 49750520267, 365694010435, 2687564829667, 19752736970617, 145173898526499, 1066965083553746, 7841771608569736, 57633622628200420

Offset

1,1

Comments

Column 5 of A302670.

Links

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

Example

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

Crossrefs

Cf. A302670.

Sequence in context: A042135 A326803 A302221 * A302469 A303251 A203759

Adjacent sequences: A302664 A302665 A302666 * A302668 A302669 A302670

Keyword

nonn

Author

R. H. Hardin, Apr 11 2018

Status

approved