login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A227809 Number of rooted identity trees with n nodes and exactly 5 subtrees from the root. 2

%I #5 Jul 31 2013 17:08:08

%S 1,6,18,57,165,460,1242,3295,8589,22169,56675,143941,363527,914253,

%T 2291088,5725579,14275461,35526939,88279211,219088566,543169235,

%U 1345516437,3330785029,8240718421,20379364252,50380569630,124513186628,307663311638,760095010218

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

%H Alois P. Heinz, <a href="/A227809/b227809.txt">Table of n, a(n) for n = 15..800</a>

%e : n=15 o :

%e : / /|\ \ :

%e : / ( | ) \ :

%e : o o o o o :

%e : /| | | | :

%e : o o o o o :

%e : | | | :

%e : o o o :

%e : | :

%e : o :

%Y Column k=5 of A227774.

%K nonn

%O 15,2

%A _Alois P. Heinz_, Jul 31 2013

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 19:39 EDT 2024. Contains 371963 sequences. (Running on oeis4.)