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 A033563 #9 Mar 30 2012 18:34:52
%S A033563 691,3617,43867,657931,151628697551,26315271553053477373,
%T A033563 154210205991661,1520097643918070802691,
%U A033563 923038305114085622008920911661422572613197507651
%N A033563 Primes in A001067.
%C A033563 All primes in this sequence are irregular primes. The next term, corresponding to Bernoulli(114), is too large to include. See A112548 for indices 2n that yield primes. - _T. D. Noe_, Sep 28 2005
%t A033563 Select[Table[Abs[Numerator[BernoulliB[2n]/2/n]], {n, 100}], PrimeQ] (Noe)
%K A033563 nonn
%O A033563 1,1
%A A033563 _Jud McCranie_
%E A033563 More terms from _T. D. Noe_, Sep 28 2005