A292098 Number of multisets of chair trees constructed from n chairs.

1, 1, 4, 19, 104, 612, 3821, 24746, 165060, 1125442, 7810707, 54988526, 391760249, 2819145479, 20461211968, 149608592569

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: A367808 A276975 A178302 * A186997 A367239 A062265

Adjacent sequences: A292095 A292096 A292097 * A292099 A292100 A292101

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 11 2017

Status

approved