A199099 Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to two or fewer horizontal or vertical neighbors

15, 5503, 1999365, 743464228, 287771242262, 114472439855502, 46438726281827509

Offset

1,1

Comments

Column 6 of A199101

Links

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

Example

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

Crossrefs

Sequence in context: A198903 A249966 A167823 * A251820 A296177 A206360

Adjacent sequences: A199096 A199097 A199098 * A199100 A199101 A199102

Keyword

nonn

Author

R. H. Hardin Nov 02 2011

Status

approved