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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_.

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Last modified November 1 07:47 EDT 2014. Contains 248888 sequences.