Search: id:A069137
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%I A069137
%S A069137 7,14,15,21,22,23,42,47,49,50,61,77,85,87,103,106,111,112,113,114,122,
%T A069137 140,148,159,166,167,174,175,178,185,186,204,211,212,223,229,230,231,
%U A069137 237,238,239,276,292,295,300,302,303,311,327,329,337,340,356,363,364
%N A069137 Numbers which are sums of neither 1, 2, 3, 4, 5 or 6 nonnegative cubes.
%C A069137 Sequence is conjectured to be finite.
%D A069137 Bohman, Jan and Froberg, Carl-Erik; Numerical investigation of Waring's 
               problem for cubes, Nordisk Tidskr. Informationsbehandling (BIT) 21 
               (1981), 118-122.
%D A069137 F. Romani, Computations concerning Waring's problem, Calcolo, 19 (1982), 
               415-431.
%H A069137 T. D. Noe, <a href="b069137.txt">Table of n, a(n) for n=1..138</a>
%H A069137 Jean-Marc Deshouillers, Francois Hennecart and Bernard Landreau; appendix 
               by I. Gusti Putu Purnaba, <a href="http://www.ams.org/mcom/2000-69-229/
               ">7373170279850</a>, Math. Comp. 69 (2000), 421-439.
%H A069137 <a href="Sindx_Su.html#ssq">Index entries for sequences related to sums 
               of cubes</a>
%F A069137 Natural numbers remaining if union of A003325, A003072, A003327, A003328, 
               A003329 and A000578 sets were deleted. Remark: this sequence itself 
               does not include cubes, in contrast to A085334.
%e A069137 Numbers which need at least seven terms to represent them as a sum of 
               positive cubes: 14=8+1+1+1+1+1+1.
%Y A069137 Cf. A057907, A003329, A003325, A003072, A003327, A003328, A000578, A085334.
%Y A069137 Sequence in context: A107976 A022557 A085335 this_sequence A004781 A004759 
               A062056
%Y A069137 Adjacent sequences: A069134 A069135 A069136 this_sequence A069138 A069139 
               A069140
%K A069137 nonn
%O A069137 1,1
%A A069137 N. J. A. Sloane (njas(AT)research.att.com), Apr 08 2002; edited Sep 15 
               2006

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