This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A273508 #19 Jun 01 2016 16:34:34 %S A273508 36998208,449519625,2367885312,8016025680,9563569561,14753560033, %T A273508 26971693632,28769256000,61358997609,151544659968,225128651328, %U A273508 278450575201,282429583137,310289733000,310289733000,327699806625,498700534033,513025643520,578097000000 %N A273508 Values of A272701 that are the sum of a positive square and a positive cube in more than one way. %C A273508 Taxi-cab numbers (A001235) that are the sum of two nonzero squares in more than one way and also the sum of a positive square and a positive cube in more than one way. %C A273508 Subsequence of A273498. %C A273508 A001235(293) = 6^3*A001235(16) = 6^3*171288 = 36998208 is the least number with this property. %C A273508 14753560033 = 1453*2677*3793 is the first term that is in A272935. %C A273508 Obviously, in this sequence there are perfect powers infinitely many times. %e A273508 36998208 is a term because 36998208 = 102^3 + 330^3 = 144^3 + 324^3 = 1728^2 + 324^3 = 5832^2 + 144^3 = 648^2 + 6048^2 = 1728^2 + 5832^2. %Y A273508 Cf. A001235, A007692, A054402, A272701, A273498. %K A273508 nonn %O A273508 1,1 %A A273508 _Altug Alkan_, May 23 2016 %E A273508 a(2)-a(19) from _Giovanni Resta_, May 24 2016