A230397 Number of nX6 0..4 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 5, and upper left element zero

0, 8, 9068, 2467778, 501998702, 99394999376, 18905431728130

Offset

1,2

Comments

Column 6 of A230398

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=3
..0..4..3..2..0..4....0..1..4..0..1..2....0..1..2..3..4..3....0..3..2..1..0..2
..1..0..3..2..1..3....1..2..3..4..4..3....4..3..2..1..0..4....1..4..0..3..4..3
..2..3..4..0..1..2....0..1..2..1..0..2....4..0..1..1..2..3....2..3..1..2..3..2

Crossrefs

Sequence in context: A189250 A217025 A268152 * A230570 A055308 A188890

Adjacent sequences: A230394 A230395 A230396 * A230398 A230399 A230400

Keyword

nonn

Author

R. H. Hardin, Oct 18 2013

Status

approved