A036625 Number of 6-ary rooted trees with n nodes and height at most 8.

1, 1, 1, 2, 4, 9, 20, 48, 114, 282, 701, 1763, 4438, 11212, 28287, 71357, 179696, 451946, 1134720, 2844954, 7122041, 17805884, 44459523, 110882964, 276241029, 687501846, 1709406423, 4246490811, 10540185493, 26140852721, 64782959403

Offset

0,4

Links

Table of n, a(n) for n=0..30.

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: A226907 A186952 A034823 * A003019 A036626 A036722

Adjacent sequences: A036622 A036623 A036624 * A036626 A036627 A036628

Keyword

nonn,fini

Author

N. J. A. Sloane.

Status

approved