A277944 Number of nX7 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 9888, 5417792, 3638916907, 2328401610722, 1496942405776739, 961449638681471934, 617565158334129571727, 396670564634000349956925, 254787185951114841200863621, 163653378309250439597669572808

Offset

1,2

Comments

Column 7 of A277945.

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

Some solutions for n=2
..0..2..2..1..0..1..0. .0..2..0..1..1..2..1. .0..1..2..1..0..1..2
..1..1..0..0..2..2..1. .1..0..0..2..0..0..0. .2..2..0..1..2..1..0

Crossrefs

Cf. A277945.

Sequence in context: A001230 A238076 A103810 * A237917 A205612 A205350

Adjacent sequences: A277941 A277942 A277943 * A277945 A277946 A277947

Keyword

nonn

Author

R. H. Hardin, Nov 05 2016

Status

approved