Two or more spots are placed anywhere on a circle's circumference. Every pair is joined by a straight line. Given n spots, what is the maximum number of regions into which the circle can be divided?
(In reply to
re(2): researched by Charlie)
Indeed, A000127 is the solution, which I think is equal to my solution being (n+A006522). Where n cares for the parts between the n gon sides and the circle. Example 4 points, a square, 4 sides, 4 parts is (4 + AOO6522 )

Posted by Hugo
on 20041228 17:34:58 