%I #6 May 10 2024 08:49:26
%S 3,15,36,69,123,180,264,339,453,549,702,807,999,1128,1329,1494,1749,
%T 1935,2214,2373,2682,2940,3288,3483
%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, using only a compass.
%C See A372614 for images of the circles.
%Y Cf. A372614, A372615, A359931, A360350, A361622, A365669.
%K nonn,more
%O 0,1
%A _Scott R. Shannon_, May 10 2024