A064195 a(n) = 3*(n-2)*(n-3)*(3*n^2-9)*(3*n^2-9*n-5)/2.

0, 0, 819, 14850, 87318, 327060, 947025, 2314494, 5011020, 9902088, 18216495, 31635450, 52391394, 83376540, 128261133, 191621430, 279077400, 397440144, 554869035, 761038578, 1027314990, 1366942500, 1795239369, 2329803630

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

Harry J. Smith, Table of n, a(n) for n = 2..1000

Formula

G.f.: 9*x^4*(91+1013*x+63*x^2-109*x^3+22*x^4)/(1-x)^7. - Colin Barker, Feb 28 2012

Prog

(PARI) { for (n=2, 1000, a=3*(n - 2)*(n - 3)*(3*n^2 - 9)*(3*n^2 - 9*n - 5)/2; write("b064195.txt", n, " ", a) ) } \\ Harry J. Smith, Sep 09 2009

Crossrefs

Sequence in context: A200565 A212609 A212612 * A229409 A015308 A156414

Adjacent sequences: A064192 A064193 A064194 * A064196 A064197 A064198

Keyword

nonn,easy

Author

Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Sep 22 2001

Status

approved