A350751 Number of unlabeled strongly connected oriented graphs with n arcs.
1, 0, 0, 1, 1, 3, 7, 27, 120, 590, 3172, 18291, 112597, 731646, 5002261, 35805035, 267427870, 2077890719, 16753007782, 139843832074, 1206213748404, 10731971520412, 98340872850392, 926788397662602, 8971598464914888, 89105060389927172, 907030917078092542
Offset: 0