A201138 Number of nX4 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other

15, 135, 117, 7642, 38763, 13009, 593543, 2004404, 480902, 17798640, 46620769, 8409817, 276582081, 623837286, 94647698, 2773619630, 5579098622, 763698176, 20588470139, 37779725883, 4685012892, 119748754402, 206463265860

Offset

1,1

Comments

Column 4 of A201142

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

Some solutions for n=6
..0..0..1..2....0..0..1..2....0..0..0..2....0..0..1..1....0..0..1..3
..0..1..1..3....0..0..2..2....0..1..1..2....0..0..1..2....0..0..2..3
..0..1..2..5....1..3..3..4....1..2..3..4....1..2..2..5....1..1..2..3
..2..3..3..5....1..3..4..5....1..2..3..4....2..3..3..5....1..2..2..3
..2..3..4..5....1..3..4..5....3..4..4..5....3..3..4..5....4..4..4..5
..4..4..4..5....2..4..5..5....3..5..5..5....4..4..4..5....4..5..5..5

Crossrefs

Sequence in context: A236259 A348212 A289421 * A230659 A228583 A027630

Adjacent sequences: A201135 A201136 A201137 * A201139 A201140 A201141

Keyword

nonn

Author

R. H. Hardin Nov 27 2011

Status

approved