This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A030551 #6 Nov 28 2024 11:32:17
%S A030551 2,11,18,20,22,23,24,26,28,35,47,59,74,92,103,106,109,110,112,115,118,
%T A030551 128,146,164,174,177,180,182,183,186,189,192,195,198,200,201,204,207,
%U A030551 210,211,213,214,216,217,218,219,220,222,223
%N A030551 Position of n-th 2 in A030548.
%t A030551 Position[Table[IntegerDigits[n,6],{n,100}]//Flatten,2]//Flatten (* _Harvey P. Dale_, Nov 28 2024 *)
%K A030551 nonn
%O A030551 1,1
%A A030551 _Clark Kimberling_