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 A157860 #5 Mar 16 2014 13:38:34
%S A157860 1,-5,71,-105,6487,-1645,122441,-19985,1049887,-248661,25979005,
%T A157860 -2042425,11608085917,-62770877,267788927,2703436575,234292680479,
%U A157860 -332582883493,3704188911107,45663269876215,15433397641757,-7778087842877709,61723221856153,1595021223984687695
%N A157860 Numerator of Bernoulli(n, -3/4).
%H A157860 Vincenzo Librandi, <a href="/A157860/b157860.txt">Table of n, a(n) for n = 0..250</a>
%t A157860 Table[Numerator[BernoulliB[n, -3/4]], {n, 0, 50}] (* _Vincenzo Librandi_, Mar 16 2014 *)
%Y A157860 For denominators see A157818.
%K A157860 sign,frac
%O A157860 0,2
%A A157860 _N. J. A. Sloane_, Nov 08 2009