A211602 Number of binary increasing trees with n nodes and "min-path" of length 3.

0, 1, 3, 7, 20, 70, 287, 1356, 7248

Offset

2,3

Links

Table of n, a(n) for n=2..10.

Filippo Disanto, André permutations of the second kind associated to strictly binary increasing trees and left to right minima in their sub-permutations, arXiv preprint arXiv:1202.1139 [math.CO], 2012-2014.

Crossrefs

A diagonal of A186366.

Sequence in context: A340357 A071688 A232687 * A110149 A024331 A007174

Adjacent sequences: A211599 A211600 A211601 * A211603 A211604 A211605

Keyword

nonn,more

Author

N. J. A. Sloane, May 11 2012

Status

approved