OFFSET
1,2
LINKS
R. Zumkeller, Table of n, a(n) for n = 1..10000
EXAMPLE
42 ->'1120', length = 4 ->'11', therefore 42 is a term;
420 ->'120120', length = 6 ->'20', therefore 420 is a term.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Mar 03 2008
STATUS
approved