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A093236
a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 36.
0
0, 72, 9720, 8892880, 988920880, 888984888084888, 988898408880840888, 998889840088808400888, 999888984000888084000888, 999988898400008880840000888, 999998889840000088808400000888, 999999888984000000888084000000888, 999999988898400000008880840000000888
OFFSET
1,2
EXAMPLE
a(4) = 8892880 because its length-4 substrings (8892, 8928, 9288, 2880) are all distinct and divisible by 36 and there is no larger number with this property.
CROSSREFS
Cf. A093211, A093212, ..., A093299.
Sequence in context: A271189 A093272 A105347 * A146500 A271190 A271191
KEYWORD
base,nonn
AUTHOR
Hans Havermann, Mar 28 2004
EXTENSIONS
a(11)-a(13) from John Cerkan, Oct 25 2017
STATUS
approved