Expansion of Sum_{i>=1} x^(i*(i+1)/2)/(1 - x^(i*(i+1)/2)) / Product_{j>=1} (1 - x^(j*(j+1)/2)).

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =8a(5) =13a(6) =17a(7) =21a(8) =30a(9) =37a(10) =44a(11) =60a(12) =72a(13) =83a(14) =107a(15) =127a(16) =144a(17) =181a(18) =210a(19) =236a(20) =289a(21) =333a(22) =371a(23) =446a(24) =507a(25) =562a(26) =664a(27) =750a(28) =825a(29) =965