47682

Appears in sequences

• Square array where T(n,k) = Sum_{j=0..k} C(n+2*j,j)*C(n+2*j,k-j), read by antidiagonals.at n=51A137634
• Number of unlabeled loopless multigraphs with n edges rooted at two indistinguishable vertices.at n=8A339066
• Numbers m such that phi(m)*tau(m) is a square but phi(m)/tau(m) is not the square of an integer.at n=22A341940
• Total number of modes in all partitions of n.at n=40A372542