62480
domain: N
Appears in sequences
- a(n) = 625*n^2 - 2*n.at n=9A158373
- Products of pairs of amicable numbers (see A063990).at n=0A180163
- The product of the two numbers in an amicable pair, A002025(n) * A002046(n).at n=0A180202
- Numbers k such that A001065(x)*x = k has at least two solutions.at n=1A212327
- Number of spanning forests of a benzenoid chain of length n.at n=3A234279
- Number of sets in the geometry determined by the Hausdorff metric at each location between two sets defined by a complete bipartite graph K(3,n) (with n at least 4) missing three edges, where all three removed edges are incident to the same vertex in the 3-point set.at n=3A340898