OFFSET
1,2
LINKS
Gheorghe Coserea, Table of n, a(n) for n = 1..535
Philippe Flajolet, Zhicheng Gao, Andrew M. Odlyzko, Bruce Richmond. The Distribution of heights of binary trees and other simple trees, [Research Report] RR-1749, INRIA. 1992.
Philippe Flajolet, Andrew M. Odlyzko. The average height of binary trees and other simple trees, Research Report RR-0056, INRIA, 1981.
FORMULA
Equals lim A259899(n)/sqrt(n).
EXAMPLE
1.63706134...
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Gheorghe Coserea, Dec 03 2015
STATUS
approved