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%I #9 Apr 19 2020 17:39:23
%S 1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,1,
%T 1,1,1,1,1,1,1,3,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%U 1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1
%N Length of n-th run of digit 0 in A031235.
%K nonn,base
%O 1,6
%A _Clark Kimberling_
%E a(1)=1 inserted for consistency with change in A031235 by _Sean A. Irvine_, Apr 19 2020