A284164 Number of n X 7 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

33, 1689, 154108, 16699997, 1852406216, 213897742464, 25064817057781, 2981736353245523, 357844048109256955, 43278292532056389680, 5263990195553603263431, 643350359729498071977340

Offset: 1

Author

R. H. Hardin, Mar 21 2017

Keywords

• nonn

Comments

Column 7 of A284165.

Examples

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

Links

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

Crossrefs

Cf. A284165.