A268248 Number of nX4 0..4 arrays with every repeated value in every row greater than, and every column greater than or equal to, the previous repeated value.

570, 324900, 185193000, 98956027822, 50740994294843, 25094770808231271, 12036028524394985335, 5621452214452374028388, 2565187035327423790344235, 1146743647158206462853356328, 503335984976361363075982965598

Offset: 1

Author

R. H. Hardin, Jan 29 2016

Keywords

• nonn

Comments

Column 4 of A268249.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..17

Crossrefs

Cf. A268249.