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 A158995 #5 Mar 17 2014 10:14:49
%S A158995 1,-3,83,-33,-637,737,400901,-77693,-8068477,14020677,20212716433,
%T A158995 -3897112153,-55894488728047,1539029451817,283145183503763,
%U A158995 -818543501023413,-2926186778206833869,563942473703062157,17744532347627812073759,-488536648399352355473
%N A158995 Numerator of Bernoulli(n, -1/10).
%H A158995 Vincenzo Librandi, <a href="/A158995/b158995.txt">Table of n, a(n) for n = 0..250</a>
%t A158995 Table[Numerator[BernoulliB[n, -1/10]], {n, 0, 50}] (* _Vincenzo Librandi_, Mar 17 2014 *)
%Y A158995 For denominators see A158994.
%K A158995 sign,frac
%O A158995 0,2
%A A158995 _N. J. A. Sloane_, Nov 08 2009