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Length of n-th run of digit 4 in A031219.
0

%I #12 Apr 17 2020 02:50:48

%S 1,1,1,2,1,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,

%T 3,1,1,1,1,2,1,1,1,1,2,1,1,1,1,2,1,1,1,1,3,2,2,2,3,1,1,1,1,1,1,1,1,2,

%U 1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,1

%N Length of n-th run of digit 4 in A031219.

%K nonn,base

%O 1,4

%A _Clark Kimberling_

%E a(86) corrected by _Sean A. Irvine_, Apr 16 2020