A227809 Number of rooted identity trees with n nodes and exactly 5 subtrees from the root.

1, 6, 18, 57, 165, 460, 1242, 3295, 8589, 22169, 56675, 143941, 363527, 914253, 2291088, 5725579, 14275461, 35526939, 88279211, 219088566, 543169235, 1345516437, 3330785029, 8240718421, 20379364252, 50380569630, 124513186628, 307663311638, 760095010218

Offset: 15

Author

Alois P. Heinz, Jul 31 2013

Keywords

• nonn

Examples

			: n=15     o        :
:       / /|\ \     :
:      / ( | ) \    :
:     o  o o o  o   :
:    /|  | | |      :
:   o o  o o o      :
:   |    | |        :
:   o    o o        :
:        |          :
:        o          :
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 15..800

Crossrefs

Column k=5 of A227774.