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A069136 Numbers that are not the sum of 5 nonnegative cubes. 1
6, 7, 13, 14, 15, 20, 21, 22, 23, 34, 39, 41, 42, 46, 47, 48, 49, 50, 53, 58, 60, 61, 69, 76, 77, 79, 84, 85, 86, 87, 95, 98, 102, 103, 104, 105, 106, 110, 111, 112, 113, 114, 117, 121, 122, 123, 124, 132, 139, 140, 147, 148, 151, 158, 159, 165 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Sequence is conjectured to be finite.

Comment from Richard C. Schroeppel, Sep 22 2010: It is conjectured that 7373170279850 is the largest number requiring more than four cubes (see Deshouillers et al.).

REFERENCES

Bohman, Jan and Froberg, Carl-Erik; Numerical investigation of Waring's problem for cubes, Nordisk Tidskr. Informationsbehandling (BIT) 21 (1981), 118-122.

F. Romani, Computations concerning Waring's problem, Calcolo, 19 (1982), 415-431.

LINKS

T. D. Noe, Table of n, a(n) for n=1..4060

Jean-Marc Deshouillers, Francois Hennecart and Bernard Landreau; appendix by I. Gusti Putu Purnaba, 7373170279850, Math. Comp. 69 (2000), 421-439.

Index entries for sequences related to sums of cubes

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.

Sequence in context: A315835 A109605 A069198 * A277137 A047335 A182623

Adjacent sequences:  A069133 A069134 A069135 * A069137 A069138 A069139

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 08 2002

STATUS

approved

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Last modified October 23 19:37 EDT 2019. Contains 328373 sequences. (Running on oeis4.)