A267972 Number of nX4 0..3 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

250, 62500, 12067722, 2208460532, 370962601314, 58977586280183, 8920181825287255, 1295459314730053526, 181620283990314798496, 24698703052360112375559, 3269943855458863743367027

Offset

1,1

Comments

Column 4 of A267974.

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

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

Crossrefs

Cf. A267974.

Sequence in context: A249321 A109121 A253005 * A267995 A201547 A165281

Adjacent sequences: A267969 A267970 A267971 * A267973 A267974 A267975

Keyword

nonn

Author

R. H. Hardin, Jan 23 2016

Status

approved