108885domain: NAppears in sequencesa(n) = 225*n^2 - 15.at n=21A158559Number of ordered 9-tuples of distinct pairwise coprime positive integers with largest element n.at n=38A186980a(n) = p(n)*p(n+1)*(p(n+1) - p(n)) + 1, where p(n) = prime(n).at n=37A383242