A283690 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

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

Cf. A283691.

Sequence in context: A282527 A297093 A185488 * A008791 A201239 A013700

Adjacent sequences: A283687 A283688 A283689 * A283691 A283692 A283693

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 14 2017

STATUS

approved