A295529 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.

21, 876, 21489, 588529, 16031147, 437241277, 11938414614, 325438086413, 8875686431050, 242075272701612, 6602021695088725, 180056949233250710, 4910676438495880068, 133928360921171032911, 3652617573522712382545

Offset: 1

Author

R. H. Hardin, Nov 23 2017

Keywords

• nonn

Comments

Column 6 of A295531.

Examples

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

Links

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

Crossrefs

Cf. A295531.