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 A135367 #8 Oct 04 2013 09:26:26 %S A135367 1,2,4,5,7,8,15,23,31,87,111,119,167,335,1391,1455,1607,1679,1991, %T A135367 25887,26375 %N A135367 Not the sum of three perfect powers (assuming 1, but not 0, is a perfect power). %C A135367 No other terms < 10^9. Presumably the sequence is finite. %Y A135367 Cf. A113505, A135693, A135393, A135402. %Y A135367 Complement of A074499. %K A135367 nonn %O A135367 1,2 %A A135367 _Zak Seidov_ and _Giovanni Resta_, Feb 24 2008