98159domain: NAppears in sequencesStrong pseudoprimes to base 69.at n=33A020295Numbers k such that Euler phi(k) / Carmichael lambda(k) = 34.at n=19A066698G.f.: Product_{k>=1} Sum_{n>=0} x^(k*n) / (1 - x^(n+k)).at n=27A341959