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 A368770 #13 Jan 05 2024 07:56:53
%S A368770 0,1,10,273,17476,2184505,471853086,161845608505,82864951554568,
%T A368770 60408549683280081,60408549683280081010,80403779628445787824321,
%U A368770 138937731197954321360426700,305246195441905644028857459913,837595560292589087215184870001286
%N A368770 a(n) = (n!)^3 * Sum_{k=0..n} k/(k!)^3.
%F A368770 a(0) = 0; a(n) = n^3 * a(n-1) + n.
%F A368770 a(n) = n * A368776(n-1) for n > 0.
%o A368770 (PARI) a(n) = n!^3*sum(k=0, n, k/k!^3);
%Y A368770 Cf. A368769, A368771, A368772.
%Y A368770 Cf. A180255, A368776.
%K A368770 nonn
%O A368770 0,3
%A A368770 _Seiichi Manyama_, Jan 04 2024