%I #10 May 12 2024 10:04:33
%S 3,15,34,63,99,148,201,267,340,423,513,616,723,843,970,1107,1251,1408,
%T 1569,1743,1924,2115,2313,2524,2739,2967,3202,3447,3699
%N Number of distinct circles that can be constructed from the 3 vertices and the equally spaced 3*n points placed on the sides of an equilateral triangle when every pair of the 3 + 3*n points are connected by a circle and where the points lie at the ends of the circle's diameter.
%C See A372731 for images of the circles.
%Y Cf. A372731, A372732, A372682, A372614, A372615, A359931, A360350, A361622, A365669.
%K nonn,more
%O 1,1
%A _Scott R. Shannon_, May 11 2024