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 A160586 #7 Sep 08 2022 08:45:45
%S A160586 1,1,2,3,8,30,720,210,40320,90720,1209600,226800,43545600,5241600,
%T A160586 7925299200,14859936000,634023936000,8083805184000,582033973248000,
%U A160586 115194223872000,221172909834240000,1161157776629760000
%N A160586 Denominator of Laguerre(n, -11).
%H A160586 G. C. Greubel, <a href="/A160586/b160586.txt">Table of n, a(n) for n = 0..466</a>
%t A160586 Denominator[Table[LaguerreL[n, -11], {n, 0, 50}]] (* _G. C. Greubel_, May 14 2018 *)
%o A160586 (PARI) for(n=0,30, print1(denominator(sum(k=0,n, binomial(n,k)*(11^k/k!))), ", ")) \\ _G. C. Greubel_, May 14 2018
%o A160586 (Magma) [Denominator((&+[Binomial(n,k)*(11^k/Factorial(k)): k in [0..n]])): n in [0..30]]; // _G. C. Greubel_, May 14 2018
%Y A160586 For numerators see A160566.
%K A160586 nonn,frac
%O A160586 0,3
%A A160586 _N. J. A. Sloane_, Nov 14 2009