A302739 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
32, 2048, 85268, 3778433, 168799572, 7530280825, 336148647504, 15005851329729, 669868217032865, 29903422831135923, 1334911181586033610, 59591443914944392698, 2660207213782069872253, 118753666013501679372163
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..0..0..0..0. .0..0..1..1..0..0. .0..0..0..1..1..0. .0..0..0..1..1..0 ..0..0..1..1..1..1. .0..0..0..1..1..0. .0..0..1..1..0..1. .0..0..1..0..1..1 ..0..0..1..1..0..1. .0..0..1..0..0..0. .0..0..1..1..0..1. .0..0..1..0..0..1 ..0..0..0..1..0..1. .0..0..1..1..0..1. .0..0..1..1..0..0. .0..0..1..1..0..1 ..0..0..1..1..0..1. .0..0..0..1..1..0. .0..0..1..1..1..0. .0..0..1..1..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A302741.
Comments