A292097 Number of chair trees constructed from n chairs.

0, 1, 3, 15, 79, 463, 2842, 18261, 120834, 819229, 5658536, 39685005, 281826519, 2022583829, 14645875257, 106873747884

Offset

0,3

Links

Table of n, a(n) for n=0..15.

Isaac B. Michael and M. R. Sepanski, Net regular signed trees, Australasian Journal of Combinatorics, Volume 66(2) (2016), 192-204.

Crossrefs

Sequence in context: A337284 A186942 A193913 * A052755 A137957 A002514

Adjacent sequences: A292094 A292095 A292096 * A292098 A292099 A292100

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 11 2017

Status

approved