OFFSET
1,1
REFERENCES
Cf. table 5 of Seminar on Lie Groups and Algebraic Groups of Onishchik and Vinberg [ Springer Verlag 1990 ].
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
FORMULA
1/1617000*(2*n+11)*binomial(n+10, 3)*binomial(n+3, 3)*binomial(n+7, 4)^2
G.f.: (x+1)*(x^4+9*x^3+19*x^2+9*x+1)/(x-1)^16. - Vaclav Kotesovec, Oct 21 2012
MATHEMATICA
Rest[CoefficientList[Series[(x+1)*(x^4+9*x^3+19*x^2+9*x+1)/(x-1)^16, {x, 0, 20}], x]] (* Vaclav Kotesovec, Oct 21 2012 *)
PROG
(PARI) x='x+O('x^66); Vec(-1 + (x+1)*(x^4+9*x^3+19*x^2+9*x+1)/(x-1)^16) \\ Joerg Arndt, May 04 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paolo Dominici (pl.dm(AT)libero.it)
STATUS
approved