200491

Appears in sequences

• Numbers n such that n, n+1, n+2 are all of the form p*q^2 for distinct primes p,q.at n=20A178032
• One-fourth of the total number of edges in the graph (see A392172) formed when n points are placed in general position on each edge of a square and a chord is drawn from each point to the 3*n points on the other three sides.at n=15A392174