A278723 Number of nX4 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

35, 1050, 33466, 1058494, 30942600, 815294800, 19328645044, 414671691083, 8109321869307, 145580441811727, 2414555760264316, 37210586178295489, 535549333443944707, 7231147745218833289, 91971617342903492615

Offset: 1

Author

R. H. Hardin, Nov 27 2016

Keywords

• nonn

Comments

Column 4 of A278727.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..133

Crossrefs

Cf. A278727.