OFFSET
1,1
LINKS
J. Mulder, Table of n, a(n) for n = 1..12034
EXAMPLE
1-digit Catalan numbers are 1,1,2,5 so a(1)=4
2-digits Catalan numbers are 14,24 so a(2)=2
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Ctibor O. Zizka, Mar 09 2008
EXTENSIONS
Corrected and extended by Sean A. Irvine, Feb 07 2010
STATUS
approved