OFFSET
1,1
COMMENTS
Based on the first 2591 terms of A084687.
EXAMPLE
a(3) = 94143 because 94143 cannot be generated by inserting digits into any previous term. A084687's a(17) (246913578) is excluded because it can be generated from a(5) (2491578) by inserting a 6 in the third position from the left and inserting a 3 in the fourth position from the right.
CROSSREFS
KEYWORD
more,nonn,base
AUTHOR
Chuck Seggelin (barkeep(AT)plastereddragon.com), Jul 11 2003
EXTENSIONS
Edited by Charles R Greathouse IV, Aug 03 2010
STATUS
approved