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 A067158 Number of regions in regular n-gon which are 11-gons. 9
 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 99, 0, 0, 102, 103, 0, 0, 0, 0, 108, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 11,19 REFERENCES 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. LINKS Sascha Kurz, m-gons in regular n-gons B. Poonen and M. Rubinstein, The number of intersection points made by the diagonals of a regular polygon, SIAM J. on Discrete Mathematics, Vol. 11, No. 1, 135-156 (1998). EXAMPLE a(11)=1 because drawing the regular 11-gon with all its diagonals yields 1 11-gon. CROSSREFS Cf. A007678, A064869, A067151, A067152, A067153, A067154, A067155, A067156, A067157, A067159. Sequence in context: A137942 A099090 A123269 * A243001 A092995 A040847 Adjacent sequences:  A067155 A067156 A067157 * A067159 A067160 A067161 KEYWORD easy,nonn AUTHOR Sascha Kurz, Jan 06 2002 STATUS approved

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Last modified October 17 13:57 EDT 2019. Contains 328113 sequences. (Running on oeis4.)