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 A156949 #6 Jul 31 2014 09:11:33 %S A156949 1,-9,-112,6777,71792,-3697929,-115338832,33365774889,346152459632, %T A156949 -32197909552119,-1669781464441552,379679538201687387, %U A156949 11813777423859564272,-1587336251116141480509,-115243388514684566005072,142933582086486567666092793,1482460665337857454238617712 %N A156949 Numerator of Euler(n, 7/23). %H A156949 Vincenzo Librandi, <a href="/A156949/b156949.txt">Table of n, a(n) for n = 0..200</a> %t A156949 Numerator[EulerE[Range[0, 20], 7/23]] (* _Vincenzo Librandi_, Jul 31 2014 *) %Y A156949 For denominators see A156892. %K A156949 sign,frac %O A156949 0,2 %A A156949 _N. J. A. Sloane_, Nov 07 2009