A031005 - OEIS

%I #8 Mar 25 2019 17:31:43

%S 6,20,34,48,62,76,77,79,81,83,85,87,89,90,111,132,153,174,195,216,218,

%T 221,224,227,230,233,236,237,258,279,300,321,342,363,365,368,371,374,

%U 377,380,383,384,405,426,447,468,489,510,512

%N Position of n-th 6 in A030998.

%t Flatten[Position[Flatten[IntegerDigits[#,7]&/@Range[0,200]],6]]-1 (* _Harvey P. Dale_, Mar 25 2019 *)

%K nonn

%O 1,1

%A _Clark Kimberling_