OFFSET
1,2
EXAMPLE
a(4) = 1444 is the concatenation of 1,4,4 and 4.
a(5)=11449 and is not 10404 as zeros are not allowed.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 08 2003
EXTENSIONS
More terms from David Wasserman, May 12 2005
STATUS
approved