OFFSET
1,2
FORMULA
For n > 2, a(n) = 10^(n-1) + a(n-1). - Jon Maiga, Aug 04 2019
EXAMPLE
The next term after 1 is 21, because 21 is the lowest integer higher than 1 that contains a 1 but does not start with 1.
MATHEMATICA
CROSSREFS
KEYWORD
easy,base,nonn
AUTHOR
Dominick Cancilla, Aug 03 2010
EXTENSIONS
Definition corrected and more terms added by Jon Maiga, Aug 04 2019
STATUS
approved