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 A156891 #6 Jul 31 2014 04:34:08 %S A156891 1,-21,-22,12033,12122,-6375621,-19248262,57342230841,57701985242, %T A156891 -55315604680371,-278311242652102,652259156733139683, %U A156891 1969038425353086362,-2726905200094657136121,-19207940244101240551942,245547306017374565928933657,247085855919355908190107482 %N A156891 Numerator of Euler(n, 1/23). %H A156891 Vincenzo Librandi, <a href="/A156891/b156891.txt">Table of n, a(n) for n = 0..200</a> %t A156891 Numerator[EulerE[Range[0, 20], 1/23]] (* _Vincenzo Librandi_, Jul 31 2014 *) %Y A156891 For denominators see A156892. %K A156891 sign,frac %O A156891 0,2 %A A156891 _N. J. A. Sloane_, Nov 07 2009