A230816 Number of nX5 0..2 arrays x(i,j) with each element horizontally or vertically 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, 100, 816, 28772, 497166, 10872238, 222626294, 4556094076, 94532505000, 1941906344228, 40087399972486, 826150677451514, 17030503979740618, 351123996865798068, 7237977275451164624, 149217812560349005972

Offset

1,2

Comments

Column 5 of A230819

Links

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

Example

Some solutions for n=4
..0..2..1..0..1....0..1..2..1..0....0..1..2..1..0....0..2..1..0..2
..1..0..1..2..2....2..1..0..1..2....2..1..0..1..2....1..2..0..2..1
..2..2..2..1..0....2..1..0..0..2....2..1..0..1..2....0..1..2..0..0
..0..1..0..2..1....0..1..2..0..1....0..1..2..1..0....2..1..0..1..2

Crossrefs

Sequence in context: A333023 A171396 A202945 * A174646 A092699 A121975

Adjacent sequences: A230813 A230814 A230815 * A230817 A230818 A230819

Keyword

nonn

Author

R. H. Hardin, Oct 30 2013

Status

approved