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 A157969 #5 Mar 16 2014 14:26:06
%S A157969 1,-13,241,-234,7651,-6474,1294777,-141414,3908371,-3037554,880109741,
%T A157969 -51516894,126988371481,-1698403434,41385427951,60701726826,
%U A157969 -25346319396013,-14288276454114,52943839266052243,3008865450973746,-1027344973517969959,-802113321418821594
%N A157969 Numerator of Bernoulli(n, -4/5).
%H A157969 Vincenzo Librandi, <a href="/A157969/b157969.txt">Table of n, a(n) for n = 0..250</a>
%t A157969 Table[Numerator[BernoulliB[n, -4/5]], {n, 0, 50}] (* _Vincenzo Librandi_, Mar 16 2014 *)
%Y A157969 For denominators see A157867.
%K A157969 sign,frac
%O A157969 0,2
%A A157969 _N. J. A. Sloane_, Nov 08 2009