Search: id:A124432
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%I A124432
%S A124432 1,1,3,33,825,113025,5538225,60920475,46360481475,330503872435275,
%T A124432 20160736218551775,1687675389591187637025,145175524688023551724527525,
%U A124432 166370135063802174111446471957325,194941377468714112878127508925972294225
%N A124432 a(n) = denominator of sum{k=1 to n} 1/H(k), H(k) =sum{j=1 to k}1/j.
%H A124432 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%t A124432 f[n_] := Denominator[ Sum[ 1/HarmonicNumber[j], {j, n}]]; Table[ f[n], 
               {n, 0, 14}] (*Chandler*)
%Y A124432 Cf. A096987.
%Y A124432 Sequence in context: A144756 A003715 A009690 this_sequence A126466 A002112 
               A055549
%Y A124432 Adjacent sequences: A124429 A124430 A124431 this_sequence A124433 A124434 
               A124435
%K A124432 frac,nonn
%O A124432 0,3
%A A124432 Leroy Quet Dec 15 2006
%E A124432 Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net) and Robert G. 
               Wilson v (rgwv(at)rgwv.com), Dec 16 2006

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