A231029 Number of nX6 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero

0, 1864, 162288, 50554618, 11542542126, 2846678305070, 688099769580280, 167200150832484832, 40574225690015173848, 9849384652597361526628, 2390730158201998660437428, 580312288028186751807573536

Offset

1,2

Comments

Column 6 of A231031

Links

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

Example

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

Crossrefs

Sequence in context: A252137 A204889 A204885 * A265456 A023744 A054816

Adjacent sequences: A231026 A231027 A231028 * A231030 A231031 A231032

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved