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A220854 Sum of exclusive heights of size-balanced 3-ary trees on n nodes. 0
0, 1, 1, 1, 3, 4, 5, 5, 5, 5, 5, 5, 5, 8, 10, 12, 13, 14, 15, 16, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 22, 25, 28, 30, 32, 34, 36, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..100.

Sung-Hyuk Cha, On Complete and Size Balanced k-ary Tree Integer Sequences, International Journal of Applied Mathematics and Informatics, Issue 2, Volume 6, 2012, pp. 67-75.

CROSSREFS

Sequence in context: A161386 A085600 A128999 * A122816 A064007 A068568

Adjacent sequences:  A220851 A220852 A220853 * A220855 A220856 A220857

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 24 2012

STATUS

approved

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Last modified July 16 09:13 EDT 2020. Contains 335784 sequences. (Running on oeis4.)