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 A323804 #6 Jan 28 2019 12:43:57
%S A323804 0,75600,1077840,10553640,86272536,636428922,4429638754,29936160747,
%T A323804 200258110593,1350025656107,9269884625133,64294692046060,
%U A323804 447678000251572,3115603246683600,21610322604575616,149157054284148864,1023951079104952320,6994818732341176704
%N A323804 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 8.
%H A323804 Alois P. Heinz, <a href="/A323804/b323804.txt">Table of n, a(n) for n = 8..800</a>
%F A323804 a(n) = A154657(n) - A154656(n).
%Y A323804 Column k=8 of A130152.
%Y A323804 Cf. A154656, A154657.
%K A323804 nonn
%O A323804 8,2
%A A323804 _Alois P. Heinz_, Jan 28 2019