A284108 Number of n X 3 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.

3, 13, 25, 435, 1230, 20275, 67957, 1057769, 4091201, 57977326, 251405237, 3267210309, 15553103766, 187647577263, 965234391129, 10933376520347, 60012823834203, 644348267987097, 3735767137025182, 38329302231936856

Offset

1,1

Comments

Column 3 of A284113.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A284113.

Sequence in context: A056706 A052454 A330718 * A366939 A335747 A066947

Adjacent sequences: A284105 A284106 A284107 * A284109 A284110 A284111

Keyword

nonn

Author

R. H. Hardin, Mar 20 2017

Status

approved