A198653 Number of nX6 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

6, 3521, 3050721, 5870175231, 15022218265442

Offset

1,1

Comments

Column 6 of A198654

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A283885 A198706 A198625 * A198660 A048542 A140173

Adjacent sequences: A198650 A198651 A198652 * A198654 A198655 A198656

Keyword

nonn

Author

R. H. Hardin Oct 28 2011

Status

approved