A303472 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
16, 512, 6369, 89371, 1243692, 17247543, 239939422, 3335048493, 46357441983, 644411387300, 8957714227776, 124518113207477, 1730885098566063, 24060449638691425, 334456224185985141, 4649163632178068981
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..1 ..0..1..1..1..0. .0..1..1..0..0. .0..0..1..1..1. .1..1..1..1..1 ..1..0..1..1..0. .1..1..0..0..1. .1..0..1..0..0. .0..0..0..1..0 ..1..0..0..0..1. .0..1..0..0..1. .0..0..0..1..1. .1..1..0..1..1 ..1..0..1..0..0. .1..1..1..1..1. .0..0..1..0..0. .0..0..1..0..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A303469.
Comments