login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A036591
Number of binary rooted trees with n nodes and height at most 8.
2
1, 1, 1, 2, 3, 6, 11, 23, 46, 97, 198, 406, 811, 1613, 3155, 6141, 11822, 22652, 43052, 81441, 153031, 286187, 532067, 984509, 1811933, 3319129, 6049533, 10975090, 19815546, 35613904, 63710026, 113457471, 201128376, 354949071
OFFSET
0,4
LINKS
E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.
CROSSREFS
Sequence in context: A093304 A036590 A247139 * A365821 A036592 A036656
KEYWORD
nonn,fini,full
AUTHOR
STATUS
approved