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A069136
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Numbers that are not the sum of 5 nonnegative cubes.
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1
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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; internal format)
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OFFSET
| 1,1
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COMMENTS
| Sequence is conjectured to be finite.
Comment from Richard Schroeppel, Sep 22 2010: It is conjectured that 7373170279850 is the largest number requiring more than four cubes (see Deshouillers et al.).
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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.
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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
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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: A155942 A109605 A069198 * A047335 A182623 A127020
Adjacent sequences: A069133 A069134 A069135 * A069137 A069138 A069139
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Apr 08 2002
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