Expansion of Product_{k>=0} ((1+x^(2*k+1))/(1-x^(2*k+1)))^3.

Terms

a(0) =1a(1) =6a(2) =18a(3) =44a(4) =102a(5) =216a(6) =428a(7) =816a(8) =1494a(9) =2650a(10) =4584a(11) =7740a(12) =12804a(13) =20808a(14) =33264a(15) =52400a(16) =81462a(17) =125100a(18) =189966a(19) =285516a(20) =425016a(21) =627040a(22) =917436a(23) =1331856a(24) =1919332a(25) =2746926a(26) =3905784a(27) =5519352a(28) =7754064a(29) =10833192