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Least positive multiple of n written in base 9 using only 0 and 1.
2

%I #6 Mar 30 2012 18:35:05

%S 1,11,10,1111,11,110,111,11111111,10,11,11111,11110,111,111111,110,

%T 101111111,10001,110,11101,1111,1110,110101,11001,111111110,11011,

%U 111111,100,1001101,100101,110,111001,111011111,111110,10001,111111

%N Least positive multiple of n written in base 9 using only 0 and 1.

%K nonn,base

%O 1,2

%A _David W. Wilson_