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%I #11 Mar 31 2012 10:22:54
%S 0,0,0,0,1,0,0,0,2,0,2,1,0,2,1,0,2,1,4,1,5,0,7,0,8,3,9,2,11,5,14,5,16,
%T 1,21,12,18,13,25,6,22,11,29,15,22,9,31,14,43,22,52,16,52,30,69,38,65,
%U 36,74,44,51,34,58,36,95,37,68,48,87,54,92,48,96,63,92,52,110,80,133
%N A067155(n)/n.
%D B. Poonen and M. Rubinstein, Number of Intersection Points Made by the Diagonals of a Regular Polygon, SIAM J. Discrete Mathematics, Vol. 11, pp. 135-156.
%H Sascha Kurz, <a href="http://www.mathe2.uni-bayreuth.de/sascha/oeis/drawing/drawing.html">m-gons in regular n-gons</a>
%H B. Poonen and M. Rubinstein, <a href="http://math.mit.edu/~poonen/">The number of intersection points made by the diagonals of a regular polygon</a>, SIAM J. on Discrete Mathematics, Vol. 11, No. 1, 135-156 (1998).
%H <a href="/index/Pol#Poonen">Sequences formed by drawing all diagonals in regular polygon</a>
%Y Cf. A067155.
%K easy,nonn
%O 9,9
%A _Sascha Kurz_, Jan 06 2002