A232754 Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing

86, 561, 2799, 11642, 42136, 135738, 398282, 1080962, 2742442, 6562552, 14924881, 32441051, 67731876, 136394979, 265881588, 503206400, 927099641, 1666476136, 2928247968, 5038451724, 8502451244, 14091189678, 22963981249, 36840064368

Offset

1,1

Comments

Column 1 of A232756

Links

R. H. Hardin, Table of n, a(n) for n = 1..27

Example

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

Crossrefs

Sequence in context: A202769 A232756 A232763 * A232760 A232680 A232678

Adjacent sequences: A232751 A232752 A232753 * A232755 A232756 A232757

Keyword

nonn

Author

R. H. Hardin, Nov 29 2013

Status

approved