Expansion of ( 1 + 9*x*(1 + x) )^(1/3).

Terms

a(0) =1a(1) =3a(2) =-6a(3) =27a(4) =-144a(5) =837a(6) =-5139a(7) =32778a(8) =-215001a(9) =1440747a(10) =-9818820a(11) =67834665a(12) =-473945580a(13) =3342743235a(14) =-23766448545a(15) =170148578130