A284451 Number of n X 4 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.

2, 0, 250, 3384, 54248, 824052, 12957944, 203401448, 3209101642, 50702668880, 801990075576, 12692871462160, 200953195066764, 3182000912440584, 50388819126999402, 797940889459632096, 12635596604122356028

Offset

1,1

Comments

Column 4 of A284455.

Links

R. H. Hardin, Table of n, a(n) for n = 1..187

Example

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

Crossrefs

Cf. A284455.

Sequence in context: A036938 A344463 A221750 * A348183 A012330 A012336

Adjacent sequences: A284448 A284449 A284450 * A284452 A284453 A284454

Keyword

nonn

Author

R. H. Hardin, Mar 27 2017

Status

approved