A036633 Number of 4-ary rooted trees with n nodes and height exactly 9.

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 8, 43, 188, 720, 2522, 8288, 25973, 78506, 230716, 663100, 1871936, 5207632, 14312497, 38937270, 105015752, 281132871, 747756946, 1977633148, 5204143935, 13633435312, 35572076796, 92475463113, 239606189255

Offset

0,11

Links

Table of n, a(n) for n=0..32.

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.

Index entries for sequences related to rooted trees

Crossrefs

Sequence in context: A245136 A362904 A036424 * A036640 A036647 A000429

Adjacent sequences: A036630 A036631 A036632 * A036634 A036635 A036636

Keyword

nonn,fini

Author

N. J. A. Sloane.

Status

approved