A111783 - OEIS

%I #3 Oct 12 2012 14:40:23

%S 1,90,5005,223740,8886735,329819490,11775438675,411859047600,

%T 14282642924550,495142102154700,17259324931198350,607418587742967000,

%U 21648370208790575250,783042495355599979500,28791389550204705674250

%N Tenth column (m=9) of unsigned triangle A111595.

%F E.g.f. (1/sqrt(1-x^2))*((x/(1-x))^9)/9!.

%F a(n)=(n!/9!)*sum(binomial(2*k, k)*binomial(n-2*k-1, 8)/(4^k), k=0..floor((n-9)/2)), n>=9.

%K nonn,easy

%O 9,2

%A _Wolfdieter Lang_, Aug 23 2005