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 A129218 #21 Jul 06 2023 05:21:42
%S A129218 1,0,66,572,9009,132132,2122120,36056592,649062414,12332093488,
%T A129218 246642054516,5179482792120,113948622073286,2620818306541512,
%U A129218 62899639358957544,1572490983970669840,40884765583242727575
%N A129218 Permutations with exactly 10 fixed points.
%H A129218 Vincenzo Librandi, <a href="/A129218/b129218.txt">Table of n, a(n) for n = 10..200</a>
%F A129218 a(n) = A008290(n,10).
%F A129218 E.g.f.: exp(-x)/(1-x)*(x^10/10!). [_Zerinvary Lajos_, Apr 03 2009]
%F A129218 O.g.f.: (1/10!)*Sum_{k>=10} k!*x^k/(1 + x)^(k+1). - _Ilya Gutkovskiy_, Apr 15 2017
%p A129218 a:=n->sum(n!*sum((-1)^k/(k-9)!, j=0..n), k=9..n): seq(-a(n)/10!, n=9..27);
%p A129218 restart: G(x):=exp(-x)/(1-x)*(x^10/10!): f[0]:=G(x): for n from 1 to 26 do f[n]:=diff(f[n-1],x) od: x:=0: seq(f[n],n=10..26); # _Zerinvary Lajos_, Apr 03 2009
%t A129218 With[{nn=40}, Drop[CoefficientList[Series[Exp[-x]/(1 - x) x^10/10!, {x, 0, nn}], x]Range[0, nn]!, 10]] (* _Vincenzo Librandi_, Feb 19 2014 *)
%o A129218 (PARI) x='x+O('x^66); Vec( serlaplace(exp(-x)/(1-x)*(x^9/9!)) ) \\ _Joerg Arndt_, Feb 19 2014
%Y A129218 Cf. A008290, A008291, A170942.
%K A129218 nonn
%O A129218 10,3
%A A129218 _Zerinvary Lajos_, May 25 2007
%E A129218 Changed offset from 0 to 10 by _Vincenzo Librandi_, Feb 19 2014
%E A129218 Edited by _Joerg Arndt_, Feb 19 2014