%I A068219
%S A068219 3,3,9,3,15,9,21,6,27,15,33,9,39,21,45,12,51,27,57,15,63,33,69,18,75,
%T A068219 39,81,21,87,45,93,24,99,51,105,27,111,57,117,30,123,63,129,33,135,69,
%U A068219 141,36,147,75,153,39,159,81,165,42,171,87,177,45,183,93,189,48,195,99
%N A068219 Denominators of coefficients in ln(1+x)*(1+x)^(1/3) power series.
%C A068219 ln(1+x)*(1+x)^(1/3)=(-4)*sum(k=>1,(-x)^k/(3k))
%F A068219 a(n)=3n if n==1 or 3 (mod 4) a(n)=3n/2 if n==2 (mod 4) a(n)=3n/4 if n==0 
               (mod 4)
%F A068219 a(n) = 3*A060819(n) (from Mitch Harris, Jun 29 2005)
%Y A068219 Sequence in context: A048883 A036553 A166466 this_sequence A157031 A113213 
               A088032
%Y A068219 Adjacent sequences: A068216 A068217 A068218 this_sequence A068220 A068221 
               A068222
%K A068219 easy,frac,nonn
%O A068219 1,1
%A A068219 Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 30 2002