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 A323801 #8 Jan 28 2019 12:00:45
%S A323801 0,216,1818,10402,50879,234061,1076807,5090497,24239396,114890044,
%T A323801 539033760,2502282836,11522663348,52848995167,241925339959,
%U A323801 1106164932006,5052307570906,23047344846397,104994467312301,477733956914534,2171607914492408,9864023776496558
%N A323801 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 5.
%H A323801 Alois P. Heinz, <a href="/A323801/b323801.txt">Table of n, a(n) for n = 5..1000</a>
%F A323801 a(n) = A154654(n) - A072856(n).
%Y A323801 Column k=5 of A130152.
%Y A323801 Cf. A072856, A154654.
%K A323801 nonn,easy
%O A323801 5,2
%A A323801 _Alois P. Heinz_, Jan 28 2019