1522029233domain: NAppears in sequencesa(n) = largest prime factor of n^n + 1.at n=22A007571Triangle read by rows in which row n gives list of prime factors of p^p + 1 where p = prime(n).at n=43A125136a(n) is the greatest prime factor of prime(n)^prime(n) + 1.at n=8A388657