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

%I #12 Mar 19 2015 09:38:16

%S 160426514,10267296896,95200890914,116950928706,176277173474,

%T 289824641354,300620262890,657107001344,2506664281250,6092857018496,

%U 6963806813393,7484859437184,8427066928346,10824753654794

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

%C 308 terms (solutions) known.

%H _Randy L. Ekl_, Mar 15 2008, <a href="/A116643/b116643.txt">Table of n, a(n) for n = 1..49</a>

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

%t 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-Fran├žois Alcover_, Jul 26 2011 *)

%Y Cf. A132682.

%K nonn

%O 1,1

%A _Randy L. Ekl_, Mar 15 2008

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Last modified October 3 22:39 EDT 2023. Contains 365872 sequences. (Running on oeis4.)