This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A111784 #8 Jan 05 2021 21:57:43
%S A111784 1,110,7326,386100,17846829,762431670,31039608600,1227833727120,
%T A111784 47809764352350,1849155516788580,71501760198168300,
%U A111784 2777115998421765000,108722966424618095550,4301625967084096150500,172338358130509601230200
%N A111784 Eleventh column (m=10) of unsigned triangle A111595.
%F A111784 E.g.f.: (1/sqrt(1-x^2))*((x/(1-x))^10)/10!.
%F A111784 a(n) = (n!/10!)*Sum_{k=0..floor((n-10)/2)} binomial(2*k, k)*binomial(n-2*k-1, 9)/(4^k), n >= 10.
%t A111784 With[{nn=30},Drop[CoefficientList[Series[1/Sqrt[1-x^2] (x/(1-x))^10/ 10!,{x,0,nn}],x] Range[0,nn]!,10]] (* _Harvey P. Dale_, May 22 2016 *)
%K A111784 nonn,easy
%O A111784 10,2
%A A111784 _Wolfdieter Lang_, Aug 23 2005