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A036618 Number of 5-ary rooted trees with n nodes and height at most 7. 0
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 (list; graph; refs; listen; history; text; internal format)
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: A138164 A130802 A022543 * A003018 A196244 A035084

Adjacent sequences:  A036615 A036616 A036617 * A036619 A036620 A036621

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 15 11:44 EDT 2018. Contains 316227 sequences. (Running on oeis4.)