Number of vertices among all 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.

A372614

Number of vertices among all 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.

Terms

    a(0) =6a(1) =87a(2) =481a(3) =1992a(4) =6969a(5) =15409a(6) =35202a(7) =58422a(8) =107677a(9) =159138a(10) =268572a(11) =350860a(12) =557049

External references