A036618 Number of 5-ary rooted trees with n nodes and height at most 7.

1, 1, 1, 2, 4, 9, 20, 47, 111, 269, 650, 1577, 3808, 9189, 22079, 52931, 126486, 301559, 717129, 1701909, 4030658, 9528769, 22487287, 52984134, 124648730, 292824200, 686952007, 1609445592, 3765971432, 8801379791, 20545409197

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: A130802 A022543 A307557 * A349014 A003018 A196244

Adjacent sequences: A036615 A036616 A036617 * A036619 A036620 A036621

Keyword

nonn,fini

Author

N. J. A. Sloane.

Status

approved