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 A030318 #8 Mar 07 2022 14:46:00
%S A030318 5,11,12,15,20,27,28,29,32,33,37,39,42,48,49,53,59,67,68,69,70,73,74,
%T A030318 75,79,80,82,85,86,91,93,94,97,99,103,106,109,116,117,118,122,123,128,
%U A030318 130,134,141,142,147,154,163,164,165,166,167,170
%N A030318 Position of n-th 0 in A030317.
%t A030318 Flatten[Position[Flatten[Table[IntegerDigits[2n-1,2],{n,50}]],0]] (* _Harvey P. Dale_, Aug 06 2013 *)
%Y A030318 Cf. A030317.
%K A030318 nonn
%O A030318 1,1
%A A030318 _Clark Kimberling_