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

1,1

Comments

Column 4 of A284113.

Links

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

Example

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

Crossrefs

Cf. A284113.

Sequence in context: A365185 A111531 A052781 * A049378 A365056 A218497

Adjacent sequences: A284106 A284107 A284108 * A284110 A284111 A284112

Keyword

nonn

Author

R. H. Hardin, Mar 20 2017

Status

approved