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Number of 6-ary rooted trees with n nodes and height at most 9.
0

%I #11 Dec 23 2020 04:36:12

%S 1,1,1,2,4,9,20,48,114,283,709,1806,4626,11940,30880,80055,207586,

%T 538330,1395080,3612756,9346541,24157618,62377353,160914843,414737061,

%U 1068032468,2748211066,7066320945,18156540077,46621728265,119639668421

%N Number of 6-ary rooted trees with n nodes and height at most 9.

%H E. M. Rains and N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/cayley.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 0,4

%A _N. J. A. Sloane_.