A267995 Number of n X 4 0..2 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

250, 62500, 15625000, 3552627426, 766970396055, 158016399692284, 31323853192497584, 6008048043198865162, 1120010376077692767415, 203652957857164291693586, 36224276466386619972386421

Offset

1,1

Comments

Column 4 of A267997.

Links

R. H. Hardin, Table of n, a(n) for n = 1..41

Example

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

Crossrefs

Cf. A267997.

Sequence in context: A109121 A253005 A267972 * A201547 A165281 A033449

Adjacent sequences: A267992 A267993 A267994 * A267996 A267997 A267998

Keyword

nonn

Author

R. H. Hardin, Jan 24 2016

Status

approved