OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
FORMULA
a(n) = C(11*n-1,n-1)*C(121*n^2,2)/(3*n*C(11*n+1,3)), n>0. - Gary Detlefs, Jan 02 2014
From Peter Bala, Feb 21 2022: (Start)
The o.g.f. A(x) is algebraic: (1 - A(x))*(1 + 10*A(x))^10 + (11^11)*x*A(x)^11 = 0.
Sum_{n >= 1} a(n)*( x*(10*x + 11)^10/(11^11*(1 + x)^11) )^n = x. (End)
MATHEMATICA
Table[Binomial[11 n, n], {n, 0, 20}] (* Vincenzo Librandi, Aug 07 2014 *)
PROG
(Magma) [Binomial(11*n, n): n in [0..20]]; // Vincenzo Librandi, Aug 07 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 07 2010
STATUS
approved