A232851 Number of (n+1)X(3+1) 0..2 arrays x(i,j) with row sums sum{j^4*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^4*x(i,j), i=1..n+1} nondecreasing

356, 10020, 250841, 5049004, 81165760, 1100553095, 12972830143, 135388726387, 1274013956481, 10999910504747

Offset

1,1

Comments

Column 3 of A232852

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A237466 A233686 A231078 * A223428 A277765 A357775

Adjacent sequences: A232848 A232849 A232850 * A232852 A232853 A232854

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved