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A093299
a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 99.
88
0, 99, 990, 9900990, 99990, 99990099990, 9999990, 999999009999990, 999999990, 9999999900999999990, 99999999990, 99999999990099999999990, 9999999999990
OFFSET
1,2
EXAMPLE
a(4) is 9900990 because its length-4 substrings (9900, 9009, 0099, 0990) are all distinct and divisible by 99 and there is no larger number with this property.
CROSSREFS
Cf. A093211, A093212, ..., A093298.
Sequence in context: A223157 A223155 A308466 * A196645 A196600 A074786
KEYWORD
base,nonn,more
AUTHOR
Hans Havermann, Mar 29 2004
EXTENSIONS
a(9)-a(13) from John Cerkan, Jun 14 2017
STATUS
approved