A278284 Number of 5 X n 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, 49, 839, 16842, 350649, 7466627, 157609938, 3332353281, 70423579121, 1488690711220, 31465894708605, 665110590387221, 14058553586577416, 297159984661665232, 6281145221048978301, 132766286493553767967

Offset

1,2

Comments

Row 5 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..1. .0..0..1..1. .0..1..0..1. .0..1..1..0
..0..1..0..1. .0..1..0..1. .1..1..1..0. .0..1..0..1. .0..1..0..0
..0..0..0..1. .0..0..0..1. .1..0..0..0. .0..1..0..1. .1..0..0..1
..1..0..0..1. .0..1..1..0. .1..0..1..0. .1..0..0..1. .1..0..0..1
..1..1..0..0. .1..1..1..1. .1..1..1..0. .1..1..0..0. .0..0..0..0

Crossrefs

Cf. A278280.

Sequence in context: A350982 A289992 A357653 * A110906 A193940 A012115

Adjacent sequences: A278281 A278282 A278283 * A278285 A278286 A278287

Keyword

nonn

Author

R. H. Hardin, Nov 16 2016

Status

approved