%I A045979
%S A045979 1,7,13,17,19,31,37,43,47,49,59,61,67,71,73,79,91,97,101,103,107,
%T A045979 109,127,133,137,139,149,151,157,163,167,169,181,193,197,199,211,
%U A045979 217,223,227,229,241,247,257,259,263,269,271,277,283,289
%N A045979 Bernoulli number B_{2n} has denominator 6.
%C A045979 All primes in A053176 are in the sequence. If n is in the sequence, its 
               factorization contains only primes in A053176. - Benoit Cloitre (benoit7848c(AT)orange.fr), 
               Oct 19 2002
%C A045979 B(2n) has denominator 6 iff (n^2-1)*B(2n) is an integer. - Benoit Cloitre, 
               Feb 15 2004
%C A045979 Subsequence of A156543. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Feb 10 2009]
%D A045979 B. C. Berndt, Ramanujan's Notebooks Part IV, Springer-Verlag, see p. 
               76.
%H A045979 T. D. Noe, <a href="b045979.txt">Table of n, a(n) for n=1..1000</a>
%H A045979 <a href="Sindx_Be.html#Bernoulli">Index entries for sequences related 
               to Bernoulli numbers.</a>
%F A045979 a(n) seems to be asymptotic to c*n 5<c<6 - Benoit Cloitre (benoit7848c(AT)orange.fr), 
               Oct 19 2002
%Y A045979 Cf. A051222.
%Y A045979 Sequence in context: A097959 A156543 A090863 this_sequence A079699 A053176 
               A032669
%Y A045979 Adjacent sequences: A045976 A045977 A045978 this_sequence A045980 A045981 
               A045982
%K A045979 nonn,nice,easy
%O A045979 1,2
%A A045979 N. J. A. Sloane (njas(AT)research.att.com).