569600domain: NAppears in sequencesExpansion of Product_{k>=1} (1 - x^(6*k)) * (1 + x^k) / (1 - x^k).at n=38A280874Number of vertices among all distinct circles that can be constructed from the 4 vertices and the equally spaced 4*n points placed on the sides of a square, using only a compass.at n=8A372977