A292750 Number of N(3)-good labeled Schroeder trees with 3n+1 leaves.

1, 1, 34, 5446, 2405116, 2261938588, 3887833883752

Offset

0,3

Links

Table of n, a(n) for n=0..6.

John Engbers, David Galvin, Clifford Smyth, Restricted Stirling and Lah numbers and their inverses, arXiv:1610.05803 [math.CO], 2016.

Crossrefs

Sequence in context: A231084 A291976 A212035 * A199837 A267916 A005334

Adjacent sequences: A292747 A292748 A292749 * A292751 A292752 A292753

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 22 2017

Status

approved