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A093289
a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 89.
0
0, 89, 979, 338277, 99947, 999915, 2000008900000, 88080808440404042202020211010101, 110101010550505050, 99090909005505050500, 5555505000588888080008, 666660600060777770700070, 9999999999929, 99999999999913, 444444404004040999999909009090
OFFSET
1,2
EXAMPLE
a(4) is 338277 because its length-4 substrings (3382, 3827, 8277) are all distinct and divisible by 89 and there is no larger number with this property.
CROSSREFS
Cf. A093211, A093212, ..., A093299.
Sequence in context: A197348 A289852 A158716 * A103545 A118368 A197399
KEYWORD
base,nonn
AUTHOR
Hans Havermann, Mar 29 2004
EXTENSIONS
a(11)-a(13) from John Cerkan, Jul 01 2017
a(14)-a(15) from John Cerkan, Jan 03 2018
STATUS
approved