431761

Appears in sequences

• a(1)=1. Thereafter, a(n) = n*a(n-1) if the number of divisors of n*a(n-1) is <= the number of divisors of n+a(n-1) or a(n) = n+a(n-1) if n*a(n-1) has more divisors than n+a(n-1).at n=21A134189
• Discriminants of real quadratic fields with 3-class tower group <81,10>.at n=11A269320