A284112 Number of n X 7 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.

33, 2095, 67957, 16442183, 835390074, 202053817163, 12336109217951, 2717300368732547, 189648871247418668, 38157272354610084376, 2957145586181369921070, 550690134528386541356991

Offset

1,1

Comments

Column 7 of A284113.

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

Some solutions for n=3
..0..1..0..1..0..0..0. .0..1..0..1..0..0..1. .0..0..1..0..1..1..0
..0..0..0..1..0..1..1. .1..0..1..1..0..1..1. .1..1..1..0..0..0..1
..1..1..1..0..1..1..1. .0..0..0..0..1..1..1. .1..1..0..0..0..1..1

Crossrefs

Cf. A284113.

Sequence in context: A264170 A180920 A120288 * A099370 A267672 A283533

Adjacent sequences: A284109 A284110 A284111 * A284113 A284114 A284115

Keyword

nonn

Author

R. H. Hardin, Mar 20 2017

Status

approved