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 A030438 #7 Jul 10 2011 18:22:32
%S A030438 1,1,2,24,696,37320,3201840,401914800,69458497920,15813882201600,
%T A030438 4587474713068800,1651825133370720000,722868238335090355200,
%U A030438 377862727500237858278400,232536825223980698118297600
%N A030438 a(n) = A030019(n)*n! (or A035051*(n-1)!).
%D A030438 Warren D. Smith and David Warme, Paper in preparation, 2002.
%H A030438 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>
%F A030438 a(n) = (n-1)! Sum_{i=0}^{n-1} Stirling2(n-1, i) n^i, n >= 1.
%Y A030438 Cf. A030019, A035051.
%K A030438 nonn
%O A030438 0,3
%A A030438 David Warme (warme(AT)s3i.com)