Expansion of g.f.: (1+x^9)/((1-x)*(1-x^4)*(1-x^6)*(1-x^12)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =3a(7) =3a(8) =4a(9) =5a(10) =6a(11) =6a(12) =9a(13) =10a(14) =11a(15) =12a(16) =15a(17) =16a(18) =19a(19) =20a(20) =23a(21) =26a(22) =29a(23) =30a(24) =36a(25) =39a(26) =42a(27) =45a(28) =51a(29) =54