A302063 Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

1, 8, 148, 7070, 807601, 230634314, 163660519064, 287524499258589, 1255489680741501583, 13604053305283669077460, 365895359118873240818539121, 24430548564295449443919121195475, 4049114247665544928116295437330272275

Offset: 1

Author

R. H. Hardin, Mar 31 2018

Keywords

• nonn

Comments

Diagonal of A302069.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..16

Crossrefs

Cf. A302069.