A198720 Number of nX5 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor

15, 10507, 34003792, 141168480719, 601755060211186, 2572072097029554676, 10996875674843226590993, 47018449018254334323435148, 201033586140960282012089201427, 859545914195473034723104861028749

Offset

1,1

Comments

Column 5 of A198723

Links

R. H. Hardin, Table of n, a(n) for n = 1..52

Example

Some solutions with all values 0 to 6 for n=3
..0..1..2..1..3....0..1..2..3..4....0..1..0..2..3....0..1..2..3..4
..1..0..4..0..5....1..0..1..5..1....1..0..4..5..6....1..0..3..5..3
..0..2..0..6..1....0..6..0..4..0....0..3..0..4..0....0..4..5..6..0

Crossrefs

Sequence in context: A200794 A230173 A271403 * A140285 A208401 A198911

Adjacent sequences: A198717 A198718 A198719 * A198721 A198722 A198723

Keyword

nonn

Author

R. H. Hardin Oct 29 2011

Status

approved