OFFSET
1,2
LINKS
EXAMPLE
a(3) is 99022099 because its length-3 substrings (990, 902, 022, 220, 209, 099) are all distinct and divisible by 11 and there is no larger number with this property.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Hans Havermann, Mar 28 2004
EXTENSIONS
a(8)-a(10) from John Cerkan, May 20 2017
a(11) from John Cerkan, Oct 25 2017
STATUS
approved