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%I
%S 1,2,3,4,5,11,24,30,31,66,67,148,149,184,185,191,400,401,407,888,894,
%T 895,1104,1110,1111,1146,1147,2400,2406,2407,2442,2443,5332,5333,5368,
%U 5369,5375,6628,6629,6664,6665,6671,6880,6881
%N Numbers k such that if d,e are consecutive digits of k in base 6, then |d-e| >= 4.
%Y Cf. A007092.
%K nonn,base
%O 1,2
%A _Clark Kimberling_
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