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 A343929 #12 May 05 2021 01:54:14
%S A343929 1,2,11,1348,7993925,2986939982086,100308280020162672007,
%T A343929 416336818263472141683094788104,
%U A343929 281633775231427434285800695714399092181001,39594086714441777969538839399390619086007952991080833034
%N A343929 a(n) = Sum_{k=0..n} (k!)^(n+1) * binomial(n,k).
%H A343929 Seiichi Manyama, <a href="/A343929/b343929.txt">Table of n, a(n) for n = 0..29</a>
%F A343929 a(n) = [x^n] Sum_{k>=0} (k!)^(n+1) * x^k/(1 - x)^(k+1).
%F A343929 a(n) = n! * [x^n] exp(x) * Sum_{k>=0} (k!)^n * x^k.
%t A343929 a[n_] := Sum[(k!)^(n+1) * Binomial[n, k], {k, 0, n} ]; Array[a, 10, 0] (* _Amiram Eldar_, May 04 2021 *)
%o A343929 (PARI) a(n) = sum(k=0, n, k!^(n+1)*binomial(n, k));
%Y A343929 Cf. A046662, A343898, A343900, A343928.
%K A343929 nonn
%O A343929 0,2
%A A343929 _Seiichi Manyama_, May 04 2021