OFFSET
0,3
LINKS
Robert Donaghey, Automorphisms on Catalan trees and bracketing, J. Combin. Theory, Series B, 29 (1980), 75-90.
Antti Karttunen, Gatomorphisms (Includes the complete Scheme source for computing this sequence)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 30 2002
STATUS
approved