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 A368573 #18 Jan 13 2024 06:28:02
%S A368573 1,2,10,172,6316,381316,33973636,4184630356,680641979476,
%T A368573 141267789027796,36429267789027796,11425158161234192596,
%U A368573 4282251538636575402196,1890291840090813125264596,970616058694975134467523796,573593232413546537634467523796,386530943604347679737893326531796
%N A368573 a(n) = Sum_{k=0..n} k! * k^k.
%F A368573 a(n) ~ n! * n^n. - _Vaclav Kotesovec_, Jan 13 2024
%o A368573 (PARI) a(n) = sum(k=0, n, k!*k^k);
%Y A368573 Partial sums of A061711.
%Y A368573 Cf. A058006, A112368, A112370.
%Y A368573 Cf. A367011, A367012, A368561.
%K A368573 nonn,easy
%O A368573 0,2
%A A368573 _Seiichi Manyama_, Dec 31 2023