A278285 Number of 6Xn 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 153, 5013, 196726, 7974561, 329985827, 13538466880, 556397458939, 22855524139957, 939108990106903, 38582376309904861, 1585188853495876230, 65127697958640926840, 2675798844803131047876, 109936009766691550151969

Offset

1,2

Comments

Row 6 of A278280.

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..0. .0..1..0..1. .0..1..0..1. .0..1..1..0
..0..1..0..1. .0..1..0..1. .0..1..0..1. .0..1..0..1. .0..0..1..0
..0..0..0..1. .0..0..1..1. .1..1..0..0. .1..0..0..0. .0..1..0..0
..1..1..0..1. .0..0..0..1. .1..1..1..0. .1..0..1..0. .0..1..1..0
..1..0..1..0. .1..1..0..1. .0..1..0..1. .0..1..1..1. .1..1..1..0
..0..0..0..1. .1..0..1..0. .0..1..1..1. .0..0..0..1. .1..0..0..1

Crossrefs

Cf. A278280.

Sequence in context: A087414 A184369 A073938 * A111086 A269664 A281857

Adjacent sequences: A278282 A278283 A278284 * A278286 A278287 A278288

Keyword

nonn

Author

R. H. Hardin, Nov 16 2016

Status

approved