Expansion of a q-series used by Ramanujan in his Lost Notebook.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =16a(6) =23a(7) =34a(8) =50a(9) =70a(10) =98a(11) =136a(12) =184a(13) =250a(14) =336a(15) =444a(16) =586a(17) =768a(18) =997a(19) =1290a(20) =1660a(21) =2120a(22) =2698a(23) =3420a(24) =4310a(25) =5414a(26) =6776a(27) =8442a(28) =10488a(29) =12986