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%I #21 Sep 08 2022 08:45:04
%S 0,0,324,2268,8100,21060,45360,86184,149688,243000,374220,552420,
%T 787644,1090908,1474200,1950480,2533680,3238704,4081428,5078700,
%U 6248340,7609140,9180864,10984248,13041000,15373800,18006300,20963124
%N a(n) = 27*(n-1)*(n-2)*(n-3)*(3*n-8)/2.
%D 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 Vincenzo Librandi, <a href="/A064197/b064197.txt">Table of n, a(n) for n = 2..1000</a>
%F G.f.: 324*x^4*(1+2*x)/(1-x)^5. - _Colin Barker_, Feb 28 2012
%t Table[27*(n-1)*(n-2)*(n-3)*(3*n-8)/2,{n,2,40}] (* _Vincenzo Librandi_, Feb 29 2012 *)
%o (Magma) [27*(n-1)*(n-2)*(n-3)*(3*n-8)/2: n in [2..30]]; // _Vincenzo Librandi_, Feb 29 2012
%K nonn,easy
%O 2,3
%A Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Sep 22 2001