A302970 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 133757, 3157171, 63612987, 1365216668, 28906043997, 610488691748, 12956909898199, 274201107406761, 5808903569877147, 123055467606278343, 2606329081200670585, 55211783952761651310, 1169521808389101196131

Offset

1,1

Comments

Row 7 of A302965.

Links

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

Example

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

Crossrefs

Cf. A302965.

Sequence in context: A160448 A302271 A301847 * A291832 A302074 A302813

Adjacent sequences: A302967 A302968 A302969 * A302971 A302972 A302973

Keyword

nonn

Author

R. H. Hardin, Apr 16 2018

Status

approved