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A001930
Number of topologies, or transitive digraphs with n unlabeled nodes.
(Formerly M2817 N1133)
+0
11
1, 1, 3, 9, 33, 139, 718, 4535, 35979, 363083, 4717687, 79501654, 1744252509, 49872339897, 1856792610995, 89847422244493, 5637294117525695
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Maintained by
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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
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