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 A287527 #8 Mar 11 2025 04:42:01
%S A287527 1,2,3,5,6,7,9,10,11,13,14,15,16,17,18,20,21,22,24,25,26,27,28,29,30,
%T A287527 32,33,34,36,37,38,39,40,41,42,44,45,46,47,48,49,51,52,53,55,56,57,59,
%U A287527 60,61,62,63,64,66,67,68,70,71,72,73,74,75,76,78,79,80
%N A287527 Positions of 0 in A287372; complement of A287402.
%C A287527 Conjecture: a(n)/n -> 1.20..., and if m denotes this number, then -1 < m - a(n)/n < 1 for n >= 1.
%H A287527 Clark Kimberling, <a href="/A287527/b287527.txt">Table of n, a(n) for n = 1..10000</a>
%t A287527 s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
%t A287527 w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "000"}]
%t A287527 Table[w[n], {n, 0, 8}]
%t A287527 st = ToCharacterCode[w[22]] - 48 (* A287372 *)
%t A287527 Flatten[Position[st, 0]] (* A287527 *)
%t A287527 Flatten[Position[st, 1]] (* A287402 *)
%Y A287527 Cf. A287372, A287402.
%K A287527 nonn,easy
%O A287527 1,2
%A A287527 _Clark Kimberling_, Jun 17 2017