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 A130432 #9 May 24 2023 19:40:07 %S A130432 84,14,36,48,5,72,49,344,9 %N A130432 For digit n from 1 to 9, a(n) = the number of numbers m such that m is equal to the number of n's in the decimal digits of all numbers <= m. %C A130432 Note: sequences A101639, A101640 and A101641 are defined so that they exclude 0, so they have 13, 35 and 47 elements, respectively. This sequence counts all the zeros, so elements 2,3,4 of this sequence are 14,36,48. %H A130432 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 A130432 a(3)=36 because there are 36 numbers m such that m is equal to the number of 3's in the decimal digits of all numbers <= m. %Y A130432 See A014778 for proof that these sequences are finite and also A101639, A101640, A101641, A130427, A130428, A130429, A130430, A130431 for the numbers themselves. %K A130432 base,fini,nonn,full %O A130432 1,1 %A A130432 _Graeme McRae_, May 26 2007