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A000055 Number of trees with n unlabeled nodes.
(Formerly M0791 N0299)
+0
79
1, 1, 1, 1, 2, 3, 6, 11, 23, 47, 106, 235, 551, 1301, 3159, 7741, 19320, 48629, 123867, 317955, 823065, 2144505, 5623756, 14828074, 39299897, 104636890, 279793450, 751065460, 2023443032, 5469566585, 14830871802, 40330829030, 109972410221 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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