Expansion of Product_{m>=1} (1+x^m)^9.

Terms

a(0) =1a(1) =9a(2) =45a(3) =174a(4) =576a(5) =1701a(6) =4614a(7) =11709a(8) =28125a(9) =64525a(10) =142353a(11) =303552a(12) =628251a(13) =1266273a(14) =2492352a(15) =4801578a(16) =9071973a(17) =16837893a(18) =30744649a(19) =55296000a(20) =98070633a(21) =171683463a(22) =296919081a(23) =507695670a(24) =858866880a(25) =1438391232a(26) =2386178649a(27) =3923081006a(28) =6395198049a(29) =10341173376