A202293 Number of labeled trees avoiding a certain pattern (see Dotsenko reference for precise definition).

1, 1, 3, 14, 90, 739, 7392

Offset

0,3

Links

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

V. Dotsenko, Pattern avoidance in labelled trees, arXiv preprint arXiv:1110.0844 [math.CO], 2011-2012.

Crossrefs

Sequence in context: A200317 A202295 A088789 * A202294 A029767 A215475

Adjacent sequences: A202290 A202291 A202292 * A202294 A202295 A202296

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 15 2011

Status

approved