45136576domain: NAppears in sequencesa(n) = 7^n + n^7.at n=9A001596a(n) = n^(n+2) + (n+2)^n.at n=7A051489Triangle read by rows: T(n,r) = n^r + r^n (1 <= r <= n).at n=42A093898(2n-1)^(2n+1) + (2n+1)^(2n-1).at n=4A154682a(n) = n^9 + 9^n.at n=7A185277