G.f.: Product_{k>=1, j>=1} 1/(1 - x^(j*k^3)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =11a(7) =15a(8) =23a(9) =31a(10) =44a(11) =59a(12) =82a(13) =108a(14) =146a(15) =191a(16) =255a(17) =329a(18) =431a(19) =552a(20) =714a(21) =907a(22) =1159a(23) =1461a(24) =1853a(25) =2318a(26) =2911a(27) =3622a(28) =4515a(29) =5582