A198407 Number of 2nX6 0..4 arrays with values 0..4 introduced in row major order and each element equal to exactly one horizontal and vertical neighbor

377, 5057327, 85013617830, 1506130430723528, 27330079651426584414

Offset

1,1

Comments

Column 3 of A198408

Links

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

Example

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

Crossrefs

Sequence in context: A222350 A277942 A241908 * A003918 A350183 A045197

Adjacent sequences: A198404 A198405 A198406 * A198408 A198409 A198410

Keyword

nonn

Author

R. H. Hardin Oct 24 2011

Status

approved