A198706 Number of nX6 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

6, 3508, 2654693, 3075124662, 3588013895024, 4285681886701131

Offset

1,1

Comments

Column 6 of A198708

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A247965 A172955 A283885 * A198625 A198653 A198660

Adjacent sequences: A198703 A198704 A198705 * A198707 A198708 A198709

Keyword

nonn

Author

R. H. Hardin Oct 29 2011

Status

approved