A278004 Number of nX6 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero.

0, 17424, 6031565, 2732579072, 1224179323009, 547419319384315, 244860735613038021, 109526799967682916321, 48991344815015478999061, 21913838295037396913177114, 9802065277825607208801712389

Offset

1,2

Comments

Column 6 of A278006.

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

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

Crossrefs

Cf. A278006.

Sequence in context: A023942 A322858 A251465 * A031640 A236006 A190758

Adjacent sequences: A278001 A278002 A278003 * A278005 A278006 A278007

Keyword

nonn

Author

R. H. Hardin, Nov 08 2016

Status

approved