A284770 Number of n X 7 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

28, 2896, 298003, 31677488, 3595841703, 415218866820, 48994677634459, 5840008221148574, 702889504624919147, 85151294479167806690, 10373863251897460544155, 1269424721127000908485982

Offset: 1

Author

R. H. Hardin, Apr 02 2017

Keywords

• nonn

Comments

Column 7 of A284771.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..19

Crossrefs

Cf. A284771.