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 A158334 #5 Mar 16 2014 14:25:23
%S A158334 1,-5,13,15,-1321,-335,10219,16955,-3573841,-1503963,879397865,
%T A158334 204957775,-851608366093,-39666688711,2959809512491,10337889346275,
%U A158334 -74944106556227777,-3489994294713779,6362557475056495393,1481439997178305655,-8686827386554851319211
%N A158334 Numerator of Bernoulli(n, 1/7).
%H A158334 Vincenzo Librandi, <a href="/A158334/b158334.txt">Table of n, a(n) for n = 0..250</a>
%t A158334 Table[Numerator[BernoulliB[n, 1/7]], {n, 0, 50}] (* _Vincenzo Librandi_, Mar 16 2014 *)
%Y A158334 For denominators see A158475.
%K A158334 sign,frac
%O A158334 0,2
%A A158334 _N. J. A. Sloane_, Nov 08 2009