A284109 Number of n X 4 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

6, 46, 435, 5896, 80200, 1143533, 16442183, 240146980, 3538905880, 52568393480, 785872613710, 11812436439395, 178382105544907, 2704771593353921, 41159406062915663, 628343298365437332, 9619941922149572518

Offset: 1

Author

R. H. Hardin, Mar 20 2017

Keywords

• nonn

Comments

Column 4 of A284113.

Examples

			Some solutions for n=4
..0..0..1..1. .0..0..0..0. .0..0..1..0. .0..0..1..0. .0..0..1..1
..0..1..0..0. .0..1..1..1. .0..0..1..1. .1..0..1..1. .0..0..1..1
..0..1..1..1. .1..0..0..1. .0..0..1..1. .0..1..0..1. .0..0..1..1
..0..1..0..1. .1..1..0..1. .0..1..0..1. .1..1..0..0. .1..0..0..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..191

Crossrefs

Cf. A284113.