login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A036721 G.f. satisfies A(x) = 1 + x*cycle_index(Sym(5), A(x)). 3
1, 1, 1, 2, 4, 9, 20, 47, 112, 277, 693, 1766, 4547, 11852, 31146, 82534, 220149, 590834, 1593951, 4320723, 11761394, 32138301, 88121176, 242383729, 668607115, 1849194691, 5126800907, 14245679652, 39666239726, 110661514973, 309280533011 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Also the number of rooted trees where each node has at most 5 children. [Patrick Devlin, Apr 30 2012]

LINKS

Table of n, a(n) for n=0..30.

CROSSREFS

Cf. A036717-A036720.

Sequence in context: A095980 A036619 A036620 * A014267 A089405 A091500

Adjacent sequences:  A036718 A036719 A036720 * A036722 A036723 A036724

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified December 4 21:09 EST 2016. Contains 278755 sequences.