A303246 Number of 6Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
32, 10, 494, 160, 5158, 7823, 90728, 421983, 3251872, 23282610, 175055099, 1340813633, 10458371398, 80508035855, 634752883979, 4921023633814, 38687814219982, 301834276228660, 2365262885917076, 18505872453909054
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..1..0..0. .0..0..1..0..0. .0..0..1..0..0. .0..0..1..1..1 ..1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..0. .0..0..0..1..0 ..0..0..1..0..1. .1..0..1..0..0. .0..0..1..0..1. .0..0..0..1..1 ..1..0..0..0..0. .0..0..1..0..0. .1..0..1..0..1. .1..1..0..0..1 ..1..0..1..1..1. .0..0..0..0..1. .0..0..1..0..1. .1..1..1..1..1 ..0..0..0..1..1. .1..0..1..0..0. .0..0..1..0..1. .0..1..0..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A303242.
Comments