9765625000domain: NAppears in sequencesExpansion of (1+3*x)/(1-5*x).at n=14A128625a(n) = n^3 * 5^n.at n=10A128791a(n) is the number of shapes of balanced trees with constant branching factor 5 and n nodes. The node is balanced if the size, measured in nodes, of each pair of its children differ by at most one node.at n=38A131891