A conjecture about numerators of Bernoulli numbers related to Integer   Sequence A092291
  In this paper we disprove a conjecture about numerators of divided Bernoulli numbers $B_n/n$ and $B_n/n(n-1)$ which was suggested by Roland Bacher. We give some counterexamples. Finally, we extend the results to the general case. 
Bernd C. Kellner