A277658 Number of nX7 0..2 arrays with every element equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0) both plus 1 mod 3 and minus 1 mod 3, with new values introduced in order 0..2.

0, 98, 23375, 7393463, 1939853778, 541407069559, 147555355904302, 40507831420784920, 11097550693801190042, 3042257675643065012191, 833840708315324301188127, 228556846623263265433414261

Offset

1,2

Comments

Column 7 of A277659.

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

Some solutions for n=3
..0..1..0..1..0..2..1. .0..1..2..0..2..1..0. .0..1..0..2..1..0..2
..2..2..2..2..0..2..0. .2..0..2..1..0..1..2. .2..2..0..1..1..2..1
..0..1..0..0..1..2..1. .0..1..0..2..2..0..1. .1..0..2..1..0..2..0

Crossrefs

Cf. A277659.

Sequence in context: A173205 A181553 A251914 * A146199 A159381 A295191

Adjacent sequences: A277655 A277656 A277657 * A277659 A277660 A277661

Keyword

nonn

Author

R. H. Hardin, Oct 26 2016

Status

approved