A302152 Number of 4 X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

8, 1, 10, 17, 56, 255, 1038, 4771, 21866, 102060, 476499, 2227609, 10440370, 48996354, 230159202, 1081764728, 5086004704, 23916740145, 112479869517, 529026120838, 2488273643127, 11703911410284, 55051772837784

Offset: 1

Author

R. H. Hardin, Apr 02 2018

Keywords

• nonn

Comments

Row 4 of A302150.

Examples

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

Links

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

Crossrefs

Cf. A302150.

Formula

Empirical recurrence of order 85 (see link above).