275311670611domain: NAppears in sequencesa(n) = (n+1)^(n+1) - n^n for n>0, a(0) = 1.at n=10A007781Primes of the form a^a - b^b.at n=6A068146Smallest prime factor of n^n-(n-1)^(n-1).at n=9A068954Greatest prime factor of n^n - (n-1)^(n-1).at n=9A068955Primes in A007781.at n=4A162591