66069domain: NAppears in sequencesNumber of rooted trees with n nodes and 5 leaves.at n=12A055280Cyclops numbers with circular digits {0,6,8,9}.at n=12A274765Expansion of Product_{k>=1} (Product_{j=1..k} (1 + x^(k*j))^j).at n=39A327063a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, x_3, n)^5.at n=8A372930