A230786 Number of nX6 0..3 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.

0, 82576, 159055144, 265749521034, 477873113683628, 859151087187859602, 1541982081513444808180, 2767913429480836147434878, 4968630716540483918830970750, 8919057620352609238803195253474

Offset

1,2

Comments

Column 6 of A230787

Links

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

Example

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

Crossrefs

Sequence in context: A162184 A298430 A262794 * A253937 A218187 A010093

Adjacent sequences: A230783 A230784 A230785 * A230787 A230788 A230789

Keyword

nonn

Author

R. H. Hardin, Oct 30 2013

Status

approved