249200

Appears in sequences

• a(n) = Sum_{k=0..2n-3} T(n,k) * T(n,k+3), with T given by A027052.at n=5A027081
• Number of regions among all distinct circles that can be constructed from a point on the origin and n equally spaced points on each of the +x,-x,+y,-y coordinates axes when each pair of points is connected by a circle and where the points lie at the ends of the circles' diameter.at n=9A362234