A303247 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 21, 1465, 458, 23995, 41878, 686376, 4288552, 44547581, 435326091, 4420070682, 46247239309, 488935478096, 5159966424970, 55400725550050, 589318077173963, 6332575656503077, 67765552380120662, 727276471899440959

Offset: 1

Author

R. H. Hardin, Apr 20 2018

Keywords

• nonn

Comments

Row 7 of A303242.

Examples

			Some solutions for n=5
..0..1..1..0..0. .0..0..1..1..1. .0..0..1..1..0. .0..0..0..1..1
..1..1..1..0..0. .1..0..0..1..1. .0..0..1..1..1. .1..0..1..1..1
..0..0..0..1..1. .0..0..1..1..1. .0..0..1..0..1. .0..0..1..1..1
..1..0..0..1..0. .0..0..1..1..1. .1..1..0..1..0. .1..0..0..1..1
..1..0..1..1..1. .0..0..1..1..0. .1..1..0..0..0. .0..0..1..1..1
..0..0..0..1..1. .1..0..1..1..1. .0..0..0..0..0. .0..0..1..1..1
..1..0..1..1..1. .0..0..0..1..0. .1..0..1..0..0. .1..0..0..1..1
		

Links

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

Crossrefs

Cf. A303242.