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A067166 A067154(n)/n. 1
0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 3, 0, 1, 2, 5, 0, 6, 4, 3, 4, 4, 0, 5, 7, 13, 9, 16, 5, 15, 22, 17, 16, 25, 9, 33, 15, 38, 34, 38, 25, 48, 21, 54, 43, 49, 50, 62, 40, 54, 55, 78, 31, 91, 79, 101, 79, 131, 75, 127, 94, 139, 111, 154, 154, 169, 131, 191, 172, 180, 156, 228, 196 (list; graph; refs; listen; history; text; internal format)
OFFSET

8,12

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=8..80.

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).

B. Poonen and M. Rubinstein, Mathematica programs for these sequences

Sequences formed by drawing all diagonals in regular polygon

CROSSREFS

Cf. A067154.

Sequence in context: A194801 A273901 A014573 * A125209 A263313 A071818

Adjacent sequences:  A067163 A067164 A067165 * A067167 A067168 A067169

KEYWORD

easy,nonn

AUTHOR

Sascha Kurz, Jan 06 2002

STATUS

approved

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Last modified April 20 08:29 EDT 2019. Contains 322306 sequences. (Running on oeis4.)