A295274 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1s.

81, 2570, 99245, 3697742, 139221499, 5221177246, 196091375073, 7361533108317, 276386201580189, 10376697508977992, 389585088134351369, 14626667590533685932, 549146940474831592906, 20617295057949494189434

Offset: 1

Author

R. H. Hardin, Nov 19 2017

Keywords

• nonn

Comments

Column 7 of A295275.

Examples

			Some solutions for n=3
..0..1..0..0..0..0..1....0..0..1..0..0..0..0....0..0..1..0..1..0..1
..0..0..1..0..0..0..0....0..0..1..0..1..0..1....0..1..0..1..1..1..0
..0..0..0..0..1..1..0....1..1..0..0..0..0..1....0..0..1..0..1..0..0
		

Links

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

Crossrefs

Cf. A295275.