G.f. A(x) satisfies: 1 / (1 - x) = Product_{i>=1, j>=1} A(x^(i*j)).

Terms

a(0) =1a(1) =1a(2) =-1a(3) =-3a(4) =-1a(5) =1a(6) =4a(7) =2a(8) =-2a(9) =-5a(10) =4a(11) =2a(12) =-2a(13) =-10a(14) =3a(15) =10a(16) =21a(17) =-15a(18) =-26a(19) =-23a(20) =34a(21) =28a(22) =25a(23) =-54a(24) =-18a(25) =2a(26) =67a(27) =-48a(28) =-22a(29) =-55