A116643 Numbers representable as the sum of 3 sixth powers in more than one way.

160426514, 10267296896, 95200890914, 116950928706, 176277173474, 289824641354, 300620262890, 657107001344, 2506664281250, 6092857018496, 6963806813393, 7484859437184, 8427066928346, 10824753654794

Offset

1,1

Comments

308 terms (solutions) known.

Links

Randy L. Ekl, Mar 15 2008, Table of n, a(n) for n = 1..49

Example

a(1) = 23^6 + 15^6 + 10^6 = 22^6 + 19^6 + 3^6 = 160426514

Mathematica

Select[ Split[ Sort[ Flatten[ Table[x^6 + y^6 + z^6, {x, 1, 200}, {y, 1, x}, {z, 1, y}]]]], Length[#] > 1 & ][[All, 1]] (* Jean-François Alcover, Jul 26 2011 *)

Crossrefs

Cf. A132682.

Sequence in context: A365019 A151695 A343079 * A162839 A251473 A102337

Adjacent sequences: A116640 A116641 A116642 * A116644 A116645 A116646

Keyword

nonn

Author

Randy L. Ekl, Mar 15 2008

Status

approved