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 A358423 #21 Nov 19 2022 10:58:47
%S A358423 16,18,68,76,80,89,90,93,105,109,123,143,168,286,322,366,405,448,493,
%T A358423 494,540,541,543,591,593,646,702,770,826,832,891,893,897,960,962,966,
%U A358423 1032,1034,1039,1110,1112,1117,1193,1195,1200,1279,1281,1286,1367,1369,1374,1459,1461,1466,1554,1556
%N A358423 Numbers k such that A030717(k) = 5.
%H A358423 Michael De Vlieger, <a href="/A358423/b358423.txt">Table of n, a(n) for n = 1..8044</a> (first 1000 term by Seiichi Manyama)
%H A358423 Michael De Vlieger, <a href="/A358423/a358423.png">Plot a(s(j) + k - 1) at (j,k)</a> for j = 1..512 and s = partial sums of A030719, showing a(m) = 5 in red, a(m) = 1 in medium blue for reference, and other values of a(m) in light blue
%t A358423 t = {{1}}; Do[AppendTo[t, BinCounts[#, {1, Max[#] + 1}] &[Flatten[t]]], {44}]; Position[DeleteCases[Flatten[t], 0], 5][[All, 1]] (* _Michael De Vlieger_, Nov 15 2022, after _Peter J. C. Moses_ at A030717 *)
%Y A358423 Cf. A030723, A030724, A030725, A030726, A358424, A358425.
%Y A358423 Cf. A030717.
%K A358423 nonn
%O A358423 1,1
%A A358423 _Seiichi Manyama_, Nov 15 2022