A267995 Number of n X 4 0..3 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, 6318133327227578310005800855, 1082746870173375929870886556128, 182620177616634763310401464884566

Offset: 1

Author

R. H. Hardin, Jan 24 2016

Keywords

• nonn

Examples

			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
		

Links

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

Crossrefs

Column 4 of A267997.