0,3
Table of n, a(n) for n=0..14.
Isaac B. Michael and M. R. Sepanski, Net regular signed trees, Australasian Journal of Combinatorics, Volume 66(2) (2016), 192-204.
Sequence in context: A301385 A093793 A087959 * A006871 A268699 A253948
Adjacent sequences: A292093 A292094 A292095 * A292097 A292098 A292099
nonn,more
N. J. A. Sloane, Sep 11 2017
approved