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%I #8 Jan 08 2018 16:32:14
%S 0,700,77000,7770000,777700000,77777000000,7777770000000,
%T 777777700000000,77777777000000000,7777777770000000000,
%U 777777777700000000000,77777777777000000000000,7777777777770000000000000,777777777777700000000000000,77777777777777000000000000000
%N a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 70.
%H Hans Havermann, <a href="/A093211/a093211.txt">Table of A093211-A093299</a>
%e a(3) is 77000 because its length-3 substrings (770, 700, 000) are all distinct and divisible by 70 and there is no larger number with this property.
%Y Cf. A093211, A093212, ..., A093299.
%K base,nonn
%O 1,2
%A _Hans Havermann_, Mar 29 2004
%E a(9)-a(15) from _John Cerkan_, Jan 08 2018
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