G.f.: Product_{k>0} (1+x^k)/((1-x^k)*(1+x^(3k))*(1+x^(5k))).

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =12a(5) =19a(6) =30a(7) =46a(8) =69a(9) =101a(10) =146a(11) =208a(12) =293a(13) =408a(14) =563a(15) =768a(16) =1040a(17) =1397a(18) =1864a(19) =2470a(20) =3254a(21) =4261a(22) =5550a(23) =7192a(24) =9277a(25) =11911a(26) =15229a(27) =19391a(28) =24597a(29) =31085