%I A031981
%S A031981 1,2,3,4,5,6,7,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,29,30,
               31,32,33,34,37,38,39
%N A031981 a(1) = 1, a(2) = 2, a(n) = smallest number not the sum of cubes of >= 
               1 distinct earlier terms.
%D A031981 M. Bencze, Smarandache recurrence type sequences, Bulletin of pure and 
               applied sciences, Vol. 16E, No. 2, 1997, pp. 231-236.
%D A031981 H. Ibstedt, Smarandache Continued Fractions, Smarandache Notions Journal, 
               Vol. 10, No. 1-2-3, 1999, 39-49.
%D A031981 F. Smarandache, Properties of numbers, ASU Special Collections, 1973.
%D A031981 F. Smarandache, Sequences of Numbers Involved in Unsolved Problems, Hexis, 
               Phoenix, 2006.
%H A031981 M. L. Perez et al., eds., <a href="http://www.gallup.unm.edu/~smarandache/
               ">Smarandache Notions Journal</a>
%H A031981 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               SmarandacheSequences.html">Link to a section of The World of Mathematics.</
               a>
%H A031981 F. Smarandache, <a href="http://www.gallup.unm.edu/~smarandache/Sequences-book.pdf">
               Sequences of Numbers Involved in Unsolved Problems</a>.
%Y A031981 Essentially same as A001476. See also A031980.
%Y A031981 Sequence in context: A119257 A102455 A073678 this_sequence A001476 A039269 
               A039207
%Y A031981 Adjacent sequences: A031978 A031979 A031980 this_sequence A031982 A031983 
               A031984
%K A031981 nonn
%O A031981 1,2
%A A031981 J. Castillo (arp(AT)cia-g.com) [Broken email address?]