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A173678 Number of ways of writing n as a sum of 4 nonnegative cubes. 12
1, 4, 6, 4, 1, 0, 0, 0, 4, 12, 12, 4, 0, 0, 0, 0, 6, 12, 6, 0, 0, 0, 0, 0, 4, 4, 0, 4, 12, 12, 4, 0, 1, 0, 0, 12, 24, 12, 0, 0, 0, 0, 0, 12, 12, 0, 0, 0, 0, 0, 0, 4, 0, 0, 6, 12, 6, 0, 0, 0, 0, 0, 12, 12, 4, 12, 12, 4, 0, 0, 6, 0, 12, 24, 12, 0, 0, 0, 0, 0, 12, 16, 4, 0, 0, 0, 0, 0, 4, 4, 0, 12, 24, 12, 0, 0, 0, 0, 0, 24, 24, 0, 0, 0, 0, 0, 0, 12, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Order matters. This is the coefficient of q^n in the expansion of {Sum_{m>=0} q^(m^3)}^4.
LINKS
CROSSREFS
Sums of k cubes, number of ways of writing n as, for k=1..9: A010057, A173677, A051343, A173678, A173679, A173680, A173676, A173681, A173682.
Without order you get A025448.
Sequence in context: A023901 A247669 A342278 * A219234 A350481 A155675
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 24 2010
STATUS
approved

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Last modified August 6 07:30 EDT 2024. Contains 374960 sequences. (Running on oeis4.)