A231041 Number of 5Xn 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 at least one element with value (x(i,j)-1) mod 3, and upper left element zero

0, 2, 278, 20250, 783848, 79772488, 5472540636, 439734512038, 32779172536324, 2528383081956048, 192252299440875736, 14709518845671963492, 1122375608553171253262, 85742995996289464755458

Offset

1,2

Comments

Row 5 of A231037

Links

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

Example

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

Crossrefs

Sequence in context: A119553 A093938 A172374 * A080296 A260331 A307470

Adjacent sequences: A231038 A231039 A231040 * A231042 A231043 A231044

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved