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 A368852 #7 Jan 08 2024 09:01:04
%S A368852 1,0,1,26,1665,208124,44954785,15419491254,7894779522049,
%T A368852 5755294271573720,5755294271573720001,7660296675464621321330,
%U A368852 13236992655202865643258241,29081672863480695818238355476,79800110337391029325246047426145
%N A368852 a(n) = (n!)^3 * Sum_{k=0..n} (-1)^k/(k!)^3.
%F A368852 a(n) = n^3 * a(n-1) + (-1)^n.
%o A368852 (PARI) a(n) = n!^3*sum(k=0, n, (-1)^k/k!^3);
%Y A368852 Cf. A000166, A073701.
%Y A368852 Cf. A217284.
%K A368852 nonn,easy
%O A368852 0,4
%A A368852 _Seiichi Manyama_, Jan 07 2024