A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.

9, 56, 841, 43983, 6507601, 2641967397, 3036560660329, 9981109155098235, 93538123901225727364, 2480246214908598898309094, 186787722909431013956841219409, 39975590681225962593258073864460074

Offset: 1

Author

R. H. Hardin, Nov 16 2013

Keywords

• nonn

Comments

Diagonal of A231977

Examples

			Some solutions for n=2
..1..0..0....0..0..0....0..0..1....0..0..1....1..0..0....0..0..0....0..1..0
..0..0..0....1..1..1....1..0..0....1..0..1....1..0..0....0..0..0....0..0..0
..0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..1..1....0..0..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15