65650domain: NAppears in sequencesNumbers k that divide 9^k + 7^k.at n=27A045605Period of the continued fraction for sqrt(3^(2n+1)).at n=9A064932Sum of the largest parts of the partitions of n into 9 parts.at n=42A326473a(n) = 2 + 4^n + 2*n*(n - 1).at n=7A387376