A230467 Number of nX6 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.

0, 1260, 552720, 131421154, 33169633760, 8449174734112, 2147475302085202, 545932535826768684, 138787395853893018838, 35282586966210325591794, 8969556441199791857264994, 2280245063727120353993737526

Offset

1,2

Comments

Column 6 of A230469

Links

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

Example

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

Crossrefs

Sequence in context: A101469 A094208 A035861 * A038651 A268126 A045183

Adjacent sequences: A230464 A230465 A230466 * A230468 A230469 A230470

Keyword

nonn

Author

R. H. Hardin, Oct 20 2013

Status

approved