|
|
A064195
|
|
a(n) = 3*(n-2)*(n-3)*(3*n^2-9)*(3*n^2-9*n-5)/2.
|
|
1
|
|
|
0, 0, 819, 14850, 87318, 327060, 947025, 2314494, 5011020, 9902088, 18216495, 31635450, 52391394, 83376540, 128261133, 191621430, 279077400, 397440144, 554869035, 761038578, 1027314990, 1366942500, 1795239369, 2329803630
(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.: 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
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Sep 22 2001
|
|
STATUS
|
approved
|
|
|
|