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 A292970 #16 Jul 10 2022 09:41:28
%S A292970 1,0,0,0,0,120,-720,2520,-6720,15120,1784160,-39861360,478906560,
%T A292970 -4151192760,29059190160,43589505960,-9531493695360,262248906060960,
%U A292970 -4781455284432960,68339552332044960,-719390244156842880,105128808579670680,293382376643359246320
%N A292970 Expansion of e.g.f. exp(x^5 * exp(-x)).
%H A292970 Seiichi Manyama, <a href="/A292970/b292970.txt">Table of n, a(n) for n = 0..481</a>
%F A292970 a(n) = n! * Sum_{k=0..floor(n/5)} (-k)^(n-5*k)/(k! * (n-5*k)!). - _Seiichi Manyama_, Jul 10 2022
%t A292970 With[{nn=30},CoefficientList[Series[Exp[x^5 Exp[-x]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Jan 12 2018 *)
%o A292970 (PARI) x='x+O('x^66); Vec(serlaplace(exp(x^5*exp(-x))))
%o A292970 (PARI) a(n) = n!*sum(k=0, n\5, (-k)^(n-5*k)/(k!*(n-5*k)!)); \\ _Seiichi Manyama_, Jul 10 2022
%Y A292970 Column k=5 of A292973.
%K A292970 sign
%O A292970 0,6
%A A292970 _Seiichi Manyama_, Sep 27 2017