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A067163
A067151(n)/n.
1
0, 1, 1, 3, 4, 9, 12, 14, 18, 27, 40, 42, 53, 53, 76, 79, 120, 130, 130, 154, 192, 195, 250, 273, 321, 264, 417, 403, 472, 497, 585, 519, 686, 717, 794, 819, 904, 885, 1066, 1075, 1230, 1326, 1473, 1393, 1643, 1751, 1924, 1986, 2059, 2109, 2422, 2457, 2705, 2727
OFFSET
5,4
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.
CROSSREFS
Cf. A067151.
Sequence in context: A309758 A047075 A104479 * A287450 A010394 A010427
KEYWORD
easy,nonn
AUTHOR
Sascha Kurz, Jan 06 2002
STATUS
approved