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 A160604 #13 Sep 08 2022 08:45:45
%S A160604 1,1,1,3,1,15,45,105,315,405,525,155925,467775,2027025,42567525,
%T A160604 58046625,30405375,10854718875,8881133625,206239658625,9280784638125,
%U A160604 17717861581875,714620417135625,7044115540336875,147926426347074375
%N A160604 Denominator of Laguerre(n, -8).
%H A160604 G. C. Greubel, <a href="/A160604/b160604.txt">Table of n, a(n) for n = 0..500</a>
%t A160604 Denominator[Table[LaguerreL[n, -8], {n, 0, 50}]] (* _G. C. Greubel_, May 13 2018 *)
%o A160604 (PARI) for(n=0,30, print1(denominator(sum(k=0,n, binomial(n,k)*(8^k/k!))), ", ")) \\ _G. C. Greubel_, May 13 2018
%o A160604 (PARI) a(n) = denominator(pollaguerre(n, 0, -8)); \\ _Michel Marcus_, Feb 05 2021
%o A160604 (Magma) [Denominator((&+[Binomial(n,k)*(8^k/Factorial(k)): k in [0..n]])): n in [0..30]]; // _G. C. Greubel_, May 13 2018
%Y A160604 For numerators see A160603.
%Y A160604 Cf. A289214.
%K A160604 nonn,frac
%O A160604 0,4
%A A160604 _N. J. A. Sloane_, Nov 14 2009