L.g.f.: -log(Product_{k>=1} (1 - k*x^k)^k) = Sum_{n>=1} a(n)*x^n/n.

Terms

a(0) =1a(1) =9a(2) =28a(3) =81a(4) =126a(5) =330a(6) =344a(7) =833a(8) =973a(9) =1754a(10) =1332a(11) =5034a(12) =2198a(13) =5658a(14) =8688a(15) =13313a(16) =4914a(17) =28779a(18) =6860a(19) =54106a(20) =45752a(21) =33482a(22) =12168a(23) =254954a(24) =93751a(25) =78906a(26) =255880a(27) =505698a(28) =24390a(29) =1510700