A318428 - OEIS

A318428

Number of nX6 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 511, 1353, 20016, 132039, 1216538, 9600648, 81327718, 665822482, 5547964642, 45869504563, 380741848431, 3154908484252, 26163271819169, 216899879798735, 1798367150917047, 14910277331599425, 123621215328946695

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 6 of A318430.

LINKS

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

EXAMPLE

Some solutions for n=5

..0..1..1..0..0..1. .0..0..1..1..1..1. .0..1..1..0..1..0. .0..1..1..0..1..0

..0..1..1..0..0..1. .1..1..0..1..0..0. .1..1..0..0..1..1. .1..0..0..1..1..1

..0..1..1..0..0..0. .1..1..1..0..0..1. .0..0..0..1..1..0. .0..0..1..1..0..1