%I #13 Nov 20 2023 11:55:03
%S 0,0,4,18,120,1110,13140,189042,3197040,62093358,1361253900,
%T 33236925546,894243758760,26281928034726,837663638344260,
%U 28775491618091490,1059805146165293280,41657455054069680414,1740535210734651716220,77029901631623181859674
%N Expansion of e.g.f. -x * log(3 - 2*exp(x)).
%F a(n) = n * Sum_{k=1..n-1} 2^k * (k-1)! * Stirling2(n-1,k).
%o (PARI) a(n) = n*sum(k=1, n-1, 2^k*(k-1)!*stirling(n-1, k, 2));
%Y Cf. A052862, A367490.
%Y Cf. A027882, A201339.
%K nonn,easy
%O 0,3
%A _Seiichi Manyama_, Nov 19 2023
|