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

1,1

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

Mathematica

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

Crossrefs

Cf. A001235, A004826.

Sequence in context: A366079 A053887 A119943 * A186463 A371846 A046317

Adjacent sequences: A001242 A001243 A001244 * A001246 A001247 A001248

Keyword

nonn

Author

N. J. A. Sloane

Status

approved