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 A156191 #5 May 04 2012 03:03:30 %S A156191 1,-5,-6,305,330,-15125,-48726,12612265,13534410,-1127063075, %T A156191 -6046913046,1231021544435,3962771924490,-476712360617225, %U A156191 -3580686141374166,3976143129381065225,4266519857080266570,-671177298561550791575,-6481738795978992136086 %N A156191 Numerator of Euler(n, 1/7). %H A156191 Vincenzo Librandi, <a href="/A156191/b156191.txt">Table of n, a(n) for n = 0..200</a> %t A156191 Numerator[EulerE[Range[0,20],1/7]] (* _Vincenzo Librandi_, May 04 2012 *) %Y A156191 For denominators see A156192. %K A156191 sign,frac %O A156191 0,2 %A A156191 _N. J. A. Sloane_, Nov 07 2009