The n-th number with n divisors.

Terms

a(0) =1a(1) =3a(2) =25a(3) =14a(4) =14641a(5) =44a(6) =24137569a(7) =70a(8) =1089a(9) =405a(11) =160a(13) =2752a(14) =9801a(15) =462a(17) =1044a(19) =1520a(20) =141376a(21) =84992