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 A130428 #14 May 24 2023 17:19:36 %S A130428 0,9500000000,9628399986,9628399987,9628399988,9628399989,9628399990, %T A130428 9628399991,9628399992,9628399993,9628399994,9628399995,10000000000, %U A130428 19500000000,19628399986,19628399987,19628399988,19628399989 %N A130428 List of numbers n such that n is equal to the number of 6's in the decimal digits of all numbers <= n. %C A130428 A finite sequence with 72 terms. %H A130428 Graeme McRae, May 26 2007, <a href="/A130428/b130428.txt">Table of n, a(n) for n = 1..72</a> (full sequence) %H A130428 Tanya Khovanova and Gregory Marton, <a href="https://arxiv.org/abs/2305.10357">Archive Labeling Sequences</a>, arXiv:2305.10357 [math.HO], 2023. See p. 4. %e A130428 a(5)=9628399988 because the number of 6's in the decimal digits of the numbers from 0 to 9628399988 is 9628399988 and this is the 5th such number. %Y A130428 Cf. A014778 for proof these sequences are finite; Also A101639, A101640, A101641, A130427, A130429, A130430, A130431; Cf. A130432 for the number of numbers in these sequences. %K A130428 base,fini,full,nonn %O A130428 1,2 %A A130428 _Graeme McRae_, May 26 2007