A173676 -id:A173676 - cp's OEIS frontend

A069136 Numbers that are not the sum of 5 nonnegative cubes.

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

Offset: 1

N. J. A. Sloane, Apr 08 2002

nonn

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.).

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.

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

Sums of k cubes, number of ways of writing n as, for k=1..9: A010057, A173677, A051343, A173678, A173679, A173680, A173676, A173681, A173682.

cp's OEIS Frontend

A069136 Numbers that are not the sum of 5 nonnegative cubes.

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