0,3
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.
Sequence in context: A337284 A186942 A193913 * A052755 A137957 A002514
Adjacent sequences: A292094 A292095 A292096 * A292098 A292099 A292100
nonn,more
N. J. A. Sloane, Sep 11 2017
approved