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%I #5 Oct 19 2017 03:15:00
%S 22,3232,312311,33233233,3332113312,332121111132,23221212122321,
%T 3332312213121123,333333312213223231,33121121231232213233,
%U 3332312112213222213313,333333332322313223212311
%N a(n) is the largest base-4 string such that the n-th number coprime to 4 does not divide any substring of a(n).
%e a(3) = 3232 (base 4) because the 3rd number coprime to 4 is 5, and 5 does not divide any substring of a(3).
%K nonn,base
%O 2,1
%A _Don Reble_, Feb 20 2006
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