%I A090815
%S A090815 30,42,66,6,138,6,6,6,282,354,6,6,498,6,6,642,6,6,6,6,6,6,1002,1074,6,
               6,
%T A090815 6,6,6,1362,6,1578,6,6,6,6,6,6,6,2082,2154,6,2298,6,6,6,6,6,6,6,2802,
%U A090815 2874,6,3018,6,6,6,6,6,3378,6,3522,6,6,6,6,6,6,6,6,6,4314,6,6,6,6,6,6,
               6
%N A090815 a(n)=denominator(B(2*prime(n))) where prime(n)=n-th prime and B(k) denotes 
               the k-th Bernoulli number.
%o A090815 (PARI) a(n)=denominator(bernfrac(2*prime(n)))
%Y A090815 Sequence in context: A033992 A091454 A136152 this_sequence A093599 A007304 
               A160350
%Y A090815 Adjacent sequences: A090812 A090813 A090814 this_sequence A090816 A090817 
               A090818
%K A090815 nonn
%O A090815 1,1
%A A090815 Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 11 2004