A301448 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
32, 1490, 34976, 877044, 22207589, 564002959, 14319674594, 363595763125, 9231743942243, 234399915906671, 5951543846998622, 151113108480960499, 3836847205649231379, 97419726227858989197, 2473542056644931255534
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..0..0..1..0. .0..0..0..0..1..1. .0..0..0..0..0..0. .0..0..0..0..1..0 ..0..1..1..0..1..0. .0..1..1..0..0..0. .0..1..1..1..1..1. .0..1..1..1..0..1 ..0..0..1..0..1..1. .0..0..1..1..1..0. .0..0..0..0..0..1. .0..0..1..0..1..0 ..0..1..1..0..0..0. .0..1..0..0..1..0. .0..1..0..1..0..1. .0..1..0..0..0..1 ..0..0..1..1..1..0. .0..0..1..0..0..0. .0..0..1..0..0..0. .0..0..1..1..1..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A301450.
Comments