A303459 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

16, 512, 12408, 306767, 7626768, 189848373, 4729712941, 117851999934, 2936875623336, 73188908936110, 1823941673502397, 45454643346741044, 1132781991907637247, 28230245358586758157, 703530728472049344422

Offset: 1

Author

R. H. Hardin, Apr 24 2018

Keywords

• nonn

Comments

Row 5 of A303456.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 68

Crossrefs

Cf. A303456.

Formula

Empirical recurrence of order 68 (see link above)