A300920 - OEIS

A300920

Number of nX5 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 40, 290, 4066, 48588, 640673, 8265835, 108469760, 1419225976, 18612718736, 243965442778, 3199006474569, 41943406467118, 549970038257539, 7211211285768759, 94554378260472599, 1239807002239604003

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

OFFSET

1,2

COMMENTS

Column 5 of A300923.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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