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 A156196 #5 May 04 2012 03:28:55 %S A156196 1,-1,-12,73,732,-3721,-109332,3113561,30406812,-278347351, %T A156196 -13587056052,304035474763,8904250650492,-117738154950781, %U A156196 -8045727017033172,982026184893828457,9586782871360007772,-165767101918545512011,-14564334832981893064692 %N A156196 Numerator of Euler(n, 3/7). %H A156196 Vincenzo Librandi, <a href="/A156196/b156196.txt">Table of n, a(n) for n = 0..200</a> %t A156196 Numerator[EulerE[Range[0,20],3/7]] (* _Vincenzo Librandi_, May 04 2012 *) %Y A156196 For denominators see A156192. %K A156196 sign,frac %O A156196 0,3 %A A156196 _N. J. A. Sloane_, Nov 07 2009