Expansion of 1/E(q/E(q)) where E(q) = Product_{n>=1} (1 - q^n).

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =27a(5) =79a(6) =229a(7) =657a(8) =1873a(9) =5304a(10) =14944a(11) =41895a(12) =116947a(13) =325133a(14) =900617a(15) =2486183a(16) =6841490a(17) =18770754a(18) =51358188a(19) =140154540a(20) =381540434a(21) =1036261537a(22) =2808328337a(23) =7594958401a(24) =20499680869a(25) =55227373266a(26) =148520150761a(27) =398726637407