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 A273908 #15 Jun 14 2016 04:19:24
%S A273908 5,15,20,34,39,41,45,55,60,65,80,85,111,125,135,136,145,150,156,164,
%T A273908 175,180,194,219,220,240,245,255,260,265,299,306,313,320,325,340,351,
%U A273908 353,369,371,375,405,410,444,445,455,495,500,505,514,525,540,544
%N A273908 Integers z such that x^2 + y^4 = z^6 where x, y, z > 0, is soluble.
%C A273908 A271576 is a subsequence.
%C A273908 Terms that are not in A271576 are 55, 220, 299, ...
%C A273908 Sequence is infinite since if k is a term then also t^2*k is a term, for every t>0. - _Giovanni Resta_, Jun 04 2016
%H A273908 Chai Wah Wu, <a href="/A273908/b273908.txt">Table of n, a(n) for n = 1..10000</a>
%e A273908 5 is a term because 75^2 + 10^4 = 5^6.
%t A273908 q[n_] := {} != Select[Range[n^(1/4)]^4, n > # && IntegerQ@ Sqrt[n - #] &]; Select[ Range[100], q[#^6] &] (* _Giovanni Resta_, Jun 04 2016 *)
%Y A273908 Cf. A111925, A266212, A271576.
%K A273908 nonn
%O A273908 1,1
%A A273908 _Altug Alkan_, Jun 03 2016