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%I #4 Mar 30 2012 18:51:26
%S 0,0,0,0,0,0,0,0,0,0,4,0,5,0,0,0,5,0,5,0,8,6,5,0,7,7,10,0,6,0,7,9,7,6,
%T 4,0,7,7,7,11,7,0,4,12,16,7,4,0,9,11,9,9,5,10,8,10,10,9,4,0,8,8,11,11,
%U 5,14,5,9,9,11,9,13,5,10,11,10,5,10,5,11,11,11,10,15,5,10,10,13,5,19
%N Smallest base in which n is not divisible by any of its digits (0 if no such base).
%e a(11)=4 because it is written as 111111111111 in base 1, 1011 in base 2, 102 in base 3 and 23 in base 4; 11 is divisible by 1 but not by 2 or 3
%Y Cf. A055238-A055242.
%K base,nonn
%O 1,11
%A _Henry Bottomley_, May 04 2000
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