59579domain: NAppears in sequencesa(n) is the smallest number k such that k^n has the same digits as some other n-th power without leading zeros.at n=20A133208G.f. satisfies: A(x) = 1 + Sum_{n>=1} n * (x*A(x))^(n*(n+1)/2) / (1 - x^n*A(x)^n).at n=10A204218