A302731 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 162, 1079, 941, 4491, 20842, 89121, 286746, 1022779, 4520360, 18491493, 67714259, 259145846, 1045498404, 4177884352, 16077695845, 62395241080, 246809269806, 974367008077, 3802389262429, 14855944546521, 58398777429077

Offset: 1

Author

R. H. Hardin, Apr 12 2018

Keywords

• nonn

Comments

Row 6 of A302728.

Examples

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

Links

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

Crossrefs

Cf. A302728.