A303414 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 421, 10384, 15852, 115770, 2158662, 24386918, 158640643, 1293822589, 14788283853, 149020593141, 1275569366713, 11671994401668, 115222219445362, 1107799093548111, 10250710845474527, 96126433140397235, 918622040686576956

Offset: 1

Author

R. H. Hardin, Apr 23 2018

Keywords

• nonn

Comments

Row 7 of A303410.

Examples

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

Links

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

Crossrefs

Cf. A303410.