58685domain: NAppears in sequencesSum of primes dividing n^n+1 (with repetition).at n=10A064772Number of Dyck paths of semilength n avoiding the pattern U^(n-1) D^(n-1).at n=9A225692a(n) = (1/12)*n^2*(3*(1 + n^2) - 2*(2 + n^2)*(n mod 2)).at n=22A322844