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 A160601 #12 Sep 08 2022 08:45:45
%S A160601 1,10,119,271,8315,70499,174139,8731657,376455481,13762207,
%T A160601 23585826391,61123934273,5568591324683,11428044042013,192745690532125,
%U A160601 25291642192372513,4316709625044329,28425936917236036637
%N A160601 Numerator of Laguerre(n, -9).
%H A160601 G. C. Greubel, <a href="/A160601/b160601.txt">Table of n, a(n) for n = 0..470</a>
%t A160601 Numerator[Table[LaguerreL[n, -9], {n, 0, 50}]] (* _G. C. Greubel_, May 13 2018 *)
%o A160601 (PARI) for(n=0,30, print1(numerator(sum(k=0,n, binomial(n,k)*(9^k/k!))), ", ")) \\ _G. C. Greubel_, May 13 2018
%o A160601 (PARI) a(n) = numerator(pollaguerre(n, 0, -9)); \\ _Michel Marcus_, Feb 05 2021
%o A160601 (Magma) [Numerator((&+[Binomial(n,k)*(9^k/Factorial(k)): k in [0..n]])): n in [0..30]]; // _G. C. Greubel_, May 13 2018
%Y A160601 For denominators see A160602.
%Y A160601 Cf. A289215.
%K A160601 nonn,frac
%O A160601 0,2
%A A160601 _N. J. A. Sloane_, Nov 14 2009