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 A156956 #6 Jul 31 2014 09:14:02 %S A156956 1,-5,-126,3905,82530,-2145125,-132975486,19373108665,399220962210, %T A156956 -18697127429075,-1925850683171646,220480432805990435, %U A156956 13625538417469240290,-921769705038763619225,-132917180658162380887806,83001863806137706672499225,1709811776348530909197556770 %N A156956 Numerator of Euler(n, 9/23). %H A156956 Vincenzo Librandi, <a href="/A156956/b156956.txt">Table of n, a(n) for n = 0..200</a> %t A156956 Numerator[EulerE[Range[0, 20], 9/23]] (* _Vincenzo Librandi_, Jul 31 2014 *) %Y A156956 For denominators see A156892. %K A156956 sign,frac %O A156956 0,2 %A A156956 _N. J. A. Sloane_, Nov 07 2009