This site is supported by donations to The OEIS Foundation.



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".

(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A036642 Number of 6-ary rooted trees with n nodes and height exactly 4. 0


%S 0,0,0,0,1,3,8,18,38,76,144,266,476,841,1452,2482,4179,6978,11515,

%T 18876,30642,49435,79116,125850,198771,312136,486940,755359,1164573,

%U 1785513,2721539,4125699,6218982,9324110,13902897,20620486,30419728

%N Number of 6-ary rooted trees with n nodes and height exactly 4.

%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>

%H E. M. Rains and N. J. A. Sloane, <a href="http://www.cs.uwaterloo.ca/journals/JIS/index.html">On Cayley's Enumeration of Alkanes (or 4-Valent Trees)</a>, J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.

%K nonn,fini

%O 0,6

%A _N. J. A. Sloane_.

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 3 16:24 EST 2016. Contains 278745 sequences.