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Number of digraphs on n unlabeled nodes whose strongly connected components are directed cycles.
2

%I #5 Mar 16 2023 19:46:28

%S 1,0,1,1,8,28,736,17879,1568614,196581247,62857465075,34431266945361,

%T 42146672798547398,95881304594606248756,459546334152150732106700,

%U 4253461062245855670436620669,80700118619568448244440535541825,3011390106783578987361705575335328331

%N Number of digraphs on n unlabeled nodes whose strongly connected components are directed cycles.

%o (PARI) A361585seq(16) \\ See PARI link in A350794 for program code.

%Y Cf. A350794, A361583, A361584 (also single vertex components).

%K nonn

%O 0,5

%A _Andrew Howroyd_, Mar 16 2023