A302882 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 86, 536, 2938, 23037, 320405, 3780984, 44148194, 588417750, 8234641702, 109042468735, 1419909251038, 19277374758266, 264983349356693, 3552177386205259, 47276138831810619, 639816255891989376

Offset

1,1

Comments

Row 7 of A302877.

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

Crossrefs

Cf. A302877.

Sequence in context: A303202 A302315 A303045 * A303530 A119894 A138667

Adjacent sequences: A302879 A302880 A302881 * A302883 A302884 A302885

Keyword

nonn

Author

R. H. Hardin, Apr 15 2018

Status

approved