A283690 - OEIS

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A283690

Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors.

128, 6081, 268285, 13354587, 640543058, 30968693109, 1496646288297, 72299799564414, 3493423029563345, 168787432899036492, 8155161269130497936, 394026399329673608352, 19037838247755538800787, 919835398042802262299271

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

OFFSET

1,1

COMMENTS

Column 7 of A283691.

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS