ajs / perl6-Math-Sequences

Useful mathematical sequences
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A000055 / trees #111

Open AlexDaniel opened 5 years ago

AlexDaniel commented 5 years ago

A000055 / Number of trees with n unlabeled nodes.

The sequence is not implemented yet.

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 300628862480 823779631721 2262366343746 6226306037178