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A067158 Number of regions in regular n-gon which are 11-gons. 10
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
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
Sequence in context: A099090 A366269 A123269 * A243001 A092995 A055785
KEYWORD
nonn
AUTHOR
Sascha Kurz, Jan 06 2002
EXTENSIONS
a(110) and beyond by Scott R. Shannon, Dec 04 2021
STATUS
approved

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Last modified March 29 09:28 EDT 2024. Contains 371268 sequences. (Running on oeis4.)