A212259 Number of binary increasing trees with n nodes and "min-path" of length 5.

0, 0, 0, 1, 10, 65, 385, 2345, 15204, 105880, 793210, 6382860, 55020966, 506505272, 4963812035, 51629528080, 568303728360, 6602266433920, 80751432154868, 1037402030622720, 13968636570706370, 196748236140538368, 2893482720437769317, 44355269272024284160

Offset

2,5

Links

Table of n, a(n) for n=2..25.

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: A346895 A291231 A097791 * A198848 A215764 A262342

Adjacent sequences: A212256 A212257 A212258 * A212260 A212261 A212262

Keyword

nonn

Author

N. J. A. Sloane, May 11 2012

Extensions

More terms from Alois P. Heinz, Apr 03 2014

Status

approved