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 A367180 #14 Nov 10 2023 09:32:46
%S A367180 1,1,3,19,187,2491,41951,855387,20491395,564179371,17555839639,
%T A367180 609337562923,23340215770235,978038556122811,44506423393073487,
%U A367180 2185725954288076987,115224508775345033779,6490005347933921581195,388973650645651854960455
%N A367180 E.g.f. satisfies A(x) = 1 + (exp(x*A(x)^2) - 1)/A(x).
%H A367180 Seiichi Manyama, <a href="/A367180/b367180.txt">Table of n, a(n) for n = 0..372</a>
%F A367180 a(n) = Sum_{k=0..n} (2*n-k)!/(2*n-2*k+1)! * Stirling2(n,k).
%o A367180 (PARI) a(n) = sum(k=0, n, (2*n-k)!/(2*n-2*k+1)!*stirling(n, k, 2));
%Y A367180 Cf. A000272, A367181.
%Y A367180 Cf. A365438, A366729.
%Y A367180 Cf. A349601.
%K A367180 nonn
%O A367180 0,3
%A A367180 _Seiichi Manyama_, Nov 08 2023