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A093263
a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 63.
0
0, 63, 7567, 774977, 77742777, 99993699993, 777779177777, 77777784777777, 7777777147777777, 7777777770777777777, 777777777007777777770
OFFSET
1,2
EXAMPLE
a(4) is 774977 because its length-4 substrings (7749, 7497, 4977) are all distinct and divisible by 63 and there is no larger number with this property
CROSSREFS
Cf. A093211, A093212, ..., A093299.
Sequence in context: A292782 A251011 A234616 * A069433 A178634 A174763
KEYWORD
base,nonn
AUTHOR
Hans Havermann, Mar 29 2004
STATUS
approved