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 A156947 #6 Jul 31 2014 09:09:15 %S A156947 1,-13,-90,9217,55710,-4981093,-89140770,44888581049,267408471870, %T A156947 -43311229541203,-1289870510004450,510720217693590307, %U A156947 9125841248810815230,-2135177639698459001113,-89022519968229449751330,192264573569779283298436633,1145162226463236921601433790 %N A156947 Numerator of Euler(n, 5/23). %H A156947 Vincenzo Librandi, <a href="/A156947/b156947.txt">Table of n, a(n) for n = 0..200</a> %t A156947 Numerator[EulerE[Range[0, 20], 5/23]] (* _Vincenzo Librandi_, Jul 31 2014 *) %Y A156947 For denominators see A156892. %K A156947 sign,frac %O A156947 0,2 %A A156947 _N. J. A. Sloane_, Nov 07 2009