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%I #9 May 24 2015 10:25:57
%S 1,6,15,70,105,2310,5005,30030,255255,3233230,969969,44618574,
%T 37182145,223092870,3234846615,66853496710,100280245065,200560490130,
%U 1236789689135,7420738134810,30425026352721
%N Denominators of partial sums of Bernoulli numbers B_{2n} = A000367/A002445.
%H <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers.</a>
%t Denominator[Accumulate[BernoulliB[2*Range[0,20]]]] (* _Harvey P. Dale_, May 24 2015 *)
%Y Cf. A035078.
%K nonn,easy,frac
%O 0,2
%A _N. J. A. Sloane_.