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 A114071 #7 Jan 09 2014 11:20:52 %S A114071 33,7153,16065,29976,36673,39169,117985,849385,2475045,2757073, %T A114071 5421336,7137025,9474784,10797120,11596833,13627248,15714240,25586785, %U A114071 26821458,28849249,37001785,40441441,43751896,69748561,70338768,95516836 %N A114071 sigma(n) + n is a fourth power. %e A114071 sigma(33) + 33 = 81 = 3^4. %o A114071 (PARI) isok(n) = ispower(sigma(n) + n, 4); \\ _Michel Marcus_, Jan 09 2014 %Y A114071 Cf. A155085, subsequence of A114069. %K A114071 nonn %O A114071 1,1 %A A114071 _Giovanni Resta_, Feb 13 2006 %E A114071 a(9)-a(26) from _Donovan Johnson_, Feb 01 2009