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A064197 a(n) = 27*(n-1)*(n-2)*(n-3)*(3*n-8)/2. 1
0, 0, 324, 2268, 8100, 21060, 45360, 86184, 149688, 243000, 374220, 552420, 787644, 1090908, 1474200, 1950480, 2533680, 3238704, 4081428, 5078700, 6248340, 7609140, 9180864, 10984248, 13041000, 15373800, 18006300, 20963124 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,3
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.
LINKS
FORMULA
G.f.: 324*x^4*(1+2*x)/(1-x)^5. - Colin Barker, Feb 28 2012
MATHEMATICA
Table[27*(n-1)*(n-2)*(n-3)*(3*n-8)/2, {n, 2, 40}] (* Vincenzo Librandi, Feb 29 2012 *)
PROG
(Magma) [27*(n-1)*(n-2)*(n-3)*(3*n-8)/2: n in [2..30]]; // Vincenzo Librandi, Feb 29 2012
CROSSREFS
Sequence in context: A305070 A229538 A250437 * A233639 A203374 A183358
KEYWORD
nonn,easy
AUTHOR
Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Sep 22 2001
STATUS
approved

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Last modified July 14 16:11 EDT 2024. Contains 374322 sequences. (Running on oeis4.)