%I #8 Dec 04 2018 20:04:56
%S 0,1,1,2,12,30,639,1835,64601,369518,12351620,78569754,5477440592,
%T 35108337731,3031753084624,30230571143624,3308601182539217,
%U 33507627807222128,5183154493935250901
%N Number of connected subgroups of the symmetric group S_n.
%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>
%F Logarithmic transform of A005432.
%Y Labeled version of A005226.
%K nonn,hard
%O 0,4
%A _Christian G. Bower_, Feb 23 2006
%E a(13)-a(18) added (using data from A005432) by _Alois P. Heinz_, Dec 04 2018