A036617 - OEIS

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A036617

Number of 5-ary rooted trees with n nodes and height at most 6.

1, 1, 1, 2, 4, 9, 20, 46, 105, 243, 556, 1269, 2873, 6486, 14555, 32556, 72517, 161032, 356396, 786610, 1731228, 3800671, 8323071, 18184612, 39640861, 86228722, 187177522, 405493600, 876728251, 1892008416, 4075471821, 8762948485

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

Sean A. Irvine, Table of n, a(n) for n = 0..3905

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: A090245 A274965 A006958 * A367713 A007902 A057417

Adjacent sequences: A036614 A036615 A036616 * A036618 A036619 A036620

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved