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%I #15 Jan 20 2017 13:24:55
%S 1,1,2,2,2,2,4,1,3,3,3,3,4,1,3,5,3,1,7,1,5,4,3,3,5,2,4,3,3,3,8,1,3,5,
%T 2,4,9,1,2,4,6,3,7,1,5,6,4,1,7,1,5,4,4,3,9,4,7,2,4,1,10,1,2,7,3,4,7,1,
%U 4,6,6,1,10,1,4,7,2,3,10,1,6,6,4,4,7,2,4,4,7,4,13,1,4,2,2,5,9,1,6,9,7
%N Number of decimal digits in the denominator of the Bernoulli number B(2n).
%H Seiichi Manyama, <a href="/A092904/b092904.txt">Table of n, a(n) for n = 0..1000</a>
%t Table[IntegerLength@ Denominator@ BernoulliB[2 n], {n, 0, 100}] (* _Michael De Vlieger_, Jan 20 2017 *)
%Y Cf. A000367, A002445, A068399 (numerator).
%K nonn,base
%O 0,3
%A _Eric W. Weisstein_, Mar 12 2004
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