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A067159 Number of regions in regular n-gon which are 12-gons. 9
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, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 51, 0, 53, 0, 0, 0, 0, 0, 59, 0, 61, 0, 63, 0, 65, 0, 0, 0, 0, 0, 0, 0, 73, 0, 225, 76, 0, 0, 0, 0, 0, 0, 0, 0, 170, 0, 0, 0, 0, 0, 273, 0, 93, 0, 95, 0, 97, 0, 0, 0, 101, 102, 412 (list; graph; refs; listen; history; text; internal format)
OFFSET

12,29

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

Table of n, a(n) for n=12..103.

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).

Sequences formed by drawing all diagonals in regular polygon

EXAMPLE

a(40)=40 because drawing the regular 40-gon with all its diagonals yields 40 12-gons.

CROSSREFS

Cf. A007678, A064869, A067151, A067152, A067153, A067154, A067155, A067156, A067157, A067158.

Sequence in context: A112950 A173364 A023931 * A292152 A331907 A247404

Adjacent sequences:  A067156 A067157 A067158 * A067160 A067161 A067162

KEYWORD

easy,nonn

AUTHOR

Sascha Kurz, Jan 06 2002

STATUS

approved

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Last modified June 23 09:53 EDT 2021. Contains 345397 sequences. (Running on oeis4.)