A216632 Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 4th powers equal to sum(i^4,i=0..n-1)

1, 1, 1, 1, 1, 1, 2, 3, 6, 12, 24, 63, 164, 424, 1163, 2919, 8289, 24060, 70704, 212130, 672520, 2080293, 6485878, 20449084

Offset

1,7

Comments

Column 4 of A216635

Links

Table of n, a(n) for n=1..24.

Example

All solutions for n=9
..1....0....0....0....0....0
..4....0....1....1....0....0
..4....1....2....3....1....3
..4....3....3....3....2....3
..4....6....4....5....4....3
..5....6....5....6....6....3
..5....6....6....6....7....4
..7....7....7....6....7....8
..8....7....8....8....7....8

Crossrefs

Sequence in context: A329675 A045761 A187741 * A077903 A038086 A032305

Adjacent sequences: A216629 A216630 A216631 * A216633 A216634 A216635

Keyword

nonn

Author

R. H. Hardin Sep 11 2012

Status

approved