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A216631 Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 3rd powers equal to sum(i^3,i=0..n-1) 0
1, 1, 1, 1, 1, 1, 3, 8, 18, 42, 100, 265, 775, 2241, 6709, 20661, 64264, 202154, 647838, 2095932, 6861091, 22703554, 75731878, 254656486, 862839461, 2942117884, 10094669306, 34837009237, 120849420979, 421291017964, 1475463672293 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

Column 3 of A216635

LINKS

Table of n, a(n) for n=1..31.

EXAMPLE

All solutions for n=8

..0....1....2....1....0....0....1....0

..0....1....3....2....1....0....4....1

..2....1....4....2....2....0....4....1

..4....2....4....3....3....1....4....4

..4....5....4....3....4....2....5....5

..6....6....5....3....5....6....5....5

..6....6....6....7....6....6....5....5

..6....6....6....7....7....7....6....7

CROSSREFS

Sequence in context: A191524 A026756 A341583 * A026384 A322496 A066143

Adjacent sequences:  A216628 A216629 A216630 * A216632 A216633 A216634

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 11 2012

STATUS

approved

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Last modified June 14 21:27 EDT 2021. Contains 345041 sequences. (Running on oeis4.)