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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =8a(6) =15a(7) =20a(8) =34a(9) =48a(10) =76a(11) =103a(12) =165a(13) =222a(14) =335a(15) =461a(16) =683a(17) =919a(18) =1352a(19) =1813a(20) =2611a(21) =3519a(22) =4985a(23) =6651a(24) =9408a(25) =12501a(26) =17401a(27) =23165a(28) =32009a(29) =42312