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

1,1

Comments

Column 4 of A278727.

Links

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

Example

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

Crossrefs

Cf. A278727.

Sequence in context: A240826 A210313 A049395 * A215296 A209180 A115492

Adjacent sequences: A278720 A278721 A278722 * A278724 A278725 A278726

Keyword

nonn

Author

R. H. Hardin, Nov 27 2016

Status

approved