A289650 Number of n X 7 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.

3, 2421, 183390, 25760875, 2439241607, 332113863074, 35072966294346, 4615203834449304, 519140871714574338, 66784349259505575111, 7809000921229551589905, 991318340748862385457430

Offset: 1

Author

R. H. Hardin, Jul 09 2017

Keywords

• nonn

Comments

Column 7 of A289651.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..31

Crossrefs

Cf. A289651.