A267954 Number of nX4 0..2 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.

11, 726, 30145, 1414023, 56103165, 2290723921, 87407239371, 3343976341229, 124140022659137, 4592258225675297, 167435268977631221, 6080341495638232187, 219161395227799839753, 7874818737427465078729, 281806381317852982386447

Offset

1,1

Comments

Column 4 of A267957.

Links

R. H. Hardin, Table of n, a(n) for n = 1..162

Example

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

Crossrefs

Cf. A267957.

Sequence in context: A222653 A204974 A204701 * A206646 A267908 A180740

Adjacent sequences: A267951 A267952 A267953 * A267955 A267956 A267957

Keyword

nonn

Author

R. H. Hardin, Jan 22 2016

Status

approved