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 A271577 #14 Apr 12 2016 10:08:41
%S A271577 32,512,2197,3125,8000,8192,15625,64000,100000,131072,1419857,1953125,
%T A271577 2097152,3200000,7189057,8000000,8998912,9765625,11390625,11881376,
%U A271577 30664297,32768000,33554432,35287552,62748517,64000000,69343957,115856201,125000000,221445125,262144000,272097792
%N A271577 Powers, squares excepted, of the form x^2+y^4, with x,y > 0 (see A111925).
%H A271577 Chai Wah Wu, <a href="/A271577/b271577.txt">Table of n, a(n) for n = 1..1255</a>
%e A271577 32 = 2^5 = 16 + 16 = 2^2 + 2^4, so 32 is a term.
%o A271577 (PARI) isok(n) = {if ((p=ispower(n)) && (p != 2), for (k=1, n-1, if (issquare(k) && (p=ispower(n-k, 4)), return (1));););}
%Y A271577 Cf. A111925, A271576.
%K A271577 nonn
%O A271577 1,1
%A A271577 _Michel Marcus_, Apr 10 2016