OFFSET
1,2
COMMENTS
The obvious pattern only holds until a(149) = 389; a(150) = 3100. - Joshua Zucker, May 08 2006
EXAMPLE
a(12) = {concatenation 2*1, 1*2}= 22. a(111)= 321.
a(12345) = 58985.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Aug 22 2005
EXTENSIONS
More terms from Joshua Zucker, May 08 2006
STATUS
approved