G.f.: Sum_{k >= 1} x^k/(1-x^k)^(k+1).

Terms

a(0) =1a(1) =3a(2) =4a(3) =8a(4) =6a(5) =17a(6) =8a(7) =24a(8) =20a(9) =32a(10) =12a(11) =76a(12) =14a(13) =51a(14) =72a(15) =97a(16) =18a(17) =158a(18) =20a(19) =213a(20) =142a(21) =101a(22) =24a(23) =491a(24) =152a(25) =132a(26) =248a(27) =479a(28) =30a(29) =915