A001245 Numbers that are the sum of 4 cubes in more than 1 way.

81, 126, 128, 216, 217, 219, 224, 243, 251, 252, 259, 278, 280, 315, 341, 343, 344, 345, 352, 371, 376, 378, 405, 408, 432, 434, 467, 469, 496, 522, 540, 559, 560, 567, 584, 593, 594, 648, 687, 702, 728, 729, 730, 737, 756, 758, 763, 765, 783, 793, 802

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

References

• G. H. Hardy, Ramanujan, Cambridge Univ. Press, 1940, p. 12.
• D. Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, 165.

Links

• T. D. Noe, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A001235, A004826.

Programs

Mathematica

Transpose[Select[Table[{i,PowersRepresentations[i,4,3]}, {i,2000}], Length[#[[2]]]>1&]][[1]] (* Harvey P. Dale, Dec 11 2010 *)