%I A122271
%S A122271 5,7,5,5,7,5,5,11,7,5,5,7,5,5,13,5,7,5,7,5,5,5,7,5,7,5,11,5,5,13,7,5,7,
%T A122271 5,17
%N A122271 Smallest cube prime factor of the numerator of Bernoulli number B(n) 
               (A122270(n)).
%H A122271 <a href="http://www.bernoulli.org/factors10t.txt">Table of factors of 
               the numerators of Bernoulli numbers Bn in the range n=2,...,10000.</
               a> at www.bernoulli.org
%F A122271 a(n)^3 divides numerator of BernoulliB[ A122270(n) ].
%e A122271 a(1) = 5 because 5^3 divides Numerator[ BernoulliB[ A122270[1] ] ].
%Y A122271 Cf. A122270, A000367, A090997, A090987, A122272, A122273.
%Y A122271 Sequence in context: A104542 A161376 A107437 this_sequence A011205 A167133 
               A144567
%Y A122271 Adjacent sequences: A122268 A122269 A122270 this_sequence A122272 A122273 
               A122274
%K A122271 nonn
%O A122271 1,1
%A A122271 Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 28 2006