123468

Appears in sequences

• a(n) is the concatenation in increasing order of all single-digit divisors of n.at n=23A129476
• a(n) is the concatenation in increasing order of all single-digit divisors of n.at n=47A129476
• Number of regions among all distinct circles that can be constructed from an n X n square grid of points when each pair of points is connected by a circle and the points lie at the ends of a diameter of the circle.at n=5A360352