A198626 Number of nX7 0..5 arrays with values 0..5 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

11, 28009, 102181788, 713917706692, 5291151764465150

Offset

1,1

Comments

Column 7 of A198627

Links

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

Example

Some solutions for n=4
..0..0..0..1..1..0..0....0..0..0..0..1..2..1....0..0..0..1..1..1..2
..0..0..0..0..1..0..2....0..0..0..0..1..2..1....0..0..0..0..3..3..2
..0..0..0..0..3..3..2....0..0..0..0..0..2..1....0..0..0..0..4..4..5
..0..0..0..0..3..2..2....0..0..0..0..2..2..1....0..0..0..0..0..4..5

Crossrefs

Sequence in context: A198668 A346206 A198707 * A343119 A295176 A337248

Adjacent sequences: A198623 A198624 A198625 * A198627 A198628 A198629

Keyword

nonn

Author

R. H. Hardin Oct 27 2011

Status

approved