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A060786 a(n) = 9*(n-2)*(5*n-13)*(5*n^2 - 19*n + 16)/2. 2
0, 36, 1260, 7452, 25092, 63360, 134136, 252000, 434232, 700812, 1074420, 1580436, 2246940, 3104712, 4187232, 5530680, 7173936, 9158580, 11528892, 14331852, 17617140, 21437136, 25846920, 30904272, 36669672, 43206300 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
REFERENCES
L. Berzolari, Allgemeine Theorie der Höheren Ebenen Algebraischen Kurven, Encyclopädie der Mathematischen Wissenschaften mit Einschluss ihrer Anwendungen. Band III_2. Heft 3, Leipzig: B. G. Teubner, 1906. p. 341.
H. Brocard and T. Lemoyne, Courbes géométriques remarquables (courbes spéciales) Planes et Gauches. Tome I, Paris: Albert Blanchard, 1967 [First publ. 1919]; see p. 135.
LINKS
FORMULA
G.f.: 36x^3(1+30x+42x^2+2x^3)/(1-x)^5. - R. J. Mathar, Oct 02 2008
PROG
(PARI) { for (n=2, 1000, write("b060786.txt", n, " ", 9*(n - 2)*(5*n - 13)*(5*n^2 - 19*n + 16)/2); ) } \\ Harry J. Smith, Jul 11 2009
CROSSREFS
Sequence in context: A331234 A278806 A064196 * A270961 A162850 A163219
KEYWORD
nonn,easy
AUTHOR
Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Apr 28 2001
STATUS
approved

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Last modified September 16 04:06 EDT 2024. Contains 375959 sequences. (Running on oeis4.)