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 A135578 #2 Mar 30 2012 17:26:26 %S A135578 1,2,3,4,5,6,7,8,9,10,11,12,15,16,17,19,20,22,23,24,27,31,43,55,87,96, %T A135578 102,103,111,119,167,223,335,1391,1455,1607,1679,1775,1991,25887,26375 %N A135578 Not the sum of three distinct perfect powers (assuming 1, but not 0, is a perfect power). %C A135578 Presumably the sequence is finite. %Y A135578 Cf. A113505. %K A135578 nonn %O A135578 1,2 %A A135578 _Zak Seidov_, Feb 24 2008