A295414 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 3 1s.

21, 1632, 68613, 3019079, 136204120, 6093564449, 272714953724, 12210363190599, 546643613178667, 24472619590752067, 1095614774297460793, 49049522462925007446, 2195896628441171409216, 98308031733968098712078

Offset: 1

Author

R. H. Hardin, Nov 22 2017

Keywords

• nonn

Comments

Column 6 of A295416.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 78

Crossrefs

Cf. A295416.

Formula

Empirical recurrence of order 78 (see link above)