A278093 Number of n X 7 0..1 arrays with every element both equal and not equal to some elements at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 214, 9033, 588464, 37564017, 2422349439, 156188151088, 10066675051315, 648924377800150, 41828515552220496, 2696243081009380241, 173797341847907079579, 11202831237960968770998, 722124901221654629931597

Offset

1,2

Comments

Column 7 of A278094.

Links

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

Example

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

Crossrefs

Cf. A278094.

Sequence in context: A221807 A200043 A184600 * A259015 A207279 A207475

Adjacent sequences: A278090 A278091 A278092 * A278094 A278095 A278096

Keyword

nonn

Author

R. H. Hardin, Nov 11 2016

Status

approved