A196221 - OEIS

%I #15 Sep 08 2022 08:45:59

%S 1,99,5346,208494,6567561,177324147,4255779528,93019181112,

%T 1883638417518,35789129932842,644204338791156,11068601821048044,

%U 182631930047292726,2908062270753045714,44867246463046991016,673008696945704865240,9842752192830933654135,140693457815171581056165,1969708409412402134786310

%N Binomial(n+10, 10)*9^n

%H Vincenzo Librandi, <a href="/A196221/b196221.txt">Table of n, a(n) for n = 0..400</a>

%F a(n) = C(n+10, 10)*9^n.

%F G.f. -1 / (9*x-1)^11 . - R. J. Mathar, Oct 13 2011

%o (Magma) [Binomial(n+10, 10)*9^n: n in [0..20]];

%Y Cf. A053108, A081139, A173000, A173187, A173188, A173191, A173192.

%K nonn,easy

%O 0,2

%A _Vincenzo Librandi_, Oct 13 2011