A284450 Number of n X 3 0..1 arrays with the number of 1's king-move adjacent to some 0 one less than the number of 0's adjacent to some 1.

1, 0, 102, 250, 5253, 16478, 278315, 1019120, 15188955, 62846854, 850526529, 3891052774, 48586797398, 241642747938, 2818541243728, 15034216343154, 165507316465985, 936470483789652, 9815405179117090, 58379693308010828

Offset

1,3

Comments

Column 3 of A284455.

Links

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

Example

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

Crossrefs

Cf. A284455.

Sequence in context: A078787 A160850 A202052 * A173968 A173969 A140062

Adjacent sequences: A284447 A284448 A284449 * A284451 A284452 A284453

Keyword

nonn

Author

R. H. Hardin, Mar 27 2017

Status

approved