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A036615 Number of 5-ary rooted trees with n nodes and height at most 4. 1
1, 1, 1, 2, 4, 8, 15, 28, 50, 89, 155, 267, 451, 757, 1251, 2048, 3316, 5315, 8433, 13256, 20641, 31847, 48704, 73817, 110932, 165266, 244175, 357699, 519760, 748973, 1070637, 1517978, 2135238, 2979427, 4124960, 5665880, 7722472 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Sean A. Irvine, Table of n, a(n) for n = 0..155

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: A101976 A339656 A196723 * A006808 A006727 A007673

Adjacent sequences:  A036612 A036613 A036614 * A036616 A036617 A036618

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 17 11:45 EDT 2021. Contains 343064 sequences. (Running on oeis4.)