%I A089138
%S A089138 1,15,207,2871,40959,604503,9214479,144391815,2313641151,37724683959,
%T A089138 623474304111,10412641429479,175337108637471,2971909404000279,
%U A089138 50642191943368911,866773853177022279,14890613346688811391
%N A089138 a(n) = (3^(2*n))*(integral_{x=0 to 1} (1+x^3)^n dx)/(integral_{x=0 to 
               1} (1-x^3)^n dx).
%e A089138 a(3)=2871
%t A089138 f[n_] := 3^(2n)* Integrate[(1 + x^3)^n, {x, 0, 1}]/Integrate[(1 - x^3)^n, 
               {x, 0, 1}]; Table[ f[n], {n, 0, 18}] (from Robert G. Wilson v Dec 
               22 2003)
%Y A089138 Sequence in context: A061637 A063906 A078265 this_sequence A051813 A028230 
               A122572
%Y A089138 Adjacent sequences: A089135 A089136 A089137 this_sequence A089139 A089140 
               A089141
%K A089138 nonn
%O A089138 0,2
%A A089138 Al Hakanson (hawkuu(AT)excite.com), Dec 05 2003
%E A089138 More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003