a(n) = (tau(n^n)+n-1)/n.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =2a(5) =9a(6) =2a(7) =4a(8) =3a(9) =13a(10) =2a(11) =28a(12) =2a(13) =17a(14) =18a(15) =5a(16) =2a(17) =40a(18) =2a(19) =44a(20) =24a(21) =25a(22) =2a(23) =77a(24) =3a(25) =29a(26) =4a(27) =60a(28) =2a(29) =994