A318023 - OEIS

A318023

Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

64, 700, 4495, 37030, 304184, 2495323, 20241433, 163342483, 1322465254, 10749863872, 87367578925, 711940702703, 5803066729053, 47351790800795, 386468872771749, 3155746216467970, 25773145361237488, 210537089088168161

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OFFSET

1,1

COMMENTS

Column 7 of A318024.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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