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 A157946 #8 Sep 23 2015 06:36:16
%S A157946 1,13,253,273,52919,11375,3074653,470197,90422639,19283355,8126686265,
%T A157946 784744961,13628116788869,31697064295,1205409115771,1271113717965,
%U A157946 4094611999396543,50626609919795,254342027061912151,2003431460774809,4149481162406543989
%N A157946 Numerator of Bernoulli(n,7).
%C A157946 First entry < 0: a(104).
%H A157946 Vincenzo Librandi, <a href="/A157946/b157946.txt">Table of n, a(n) for n = 0..250</a>
%t A157946 Table[Numerator[BernoulliB[n, 7]], {n, 0, 40}] (* _Vincenzo Librandi_, Mar 16 2014 *)
%Y A157946 For denominators see A027642.
%K A157946 sign,frac
%O A157946 0,2
%A A157946 _N. J. A. Sloane_, Nov 10 2009