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 A029458 #15 Jul 04 2021 01:59:13
%S A029458 1,3,9,13,15,16,39,48,65,169,208,240,377,400,507,603,624,720,1040,
%T A029458 1168,1200,1287,1521,1833,1872,2197,2592,2784,3393,3744,4563,5211,
%U A029458 5408,6591,7989,8299,11232,13689,16224,16992,18477,19643,19773,24352,28561,37349
%N A029458 Numbers k that divide the (right) concatenation of all numbers <= k written in base 13 (most significant digit on left).
%H A029458 Robert Price, <a href="/A029458/b029458.txt">Table of n, a(n) for n = 1..49</a>
%t A029458 b = 13; c = {}; Select[Range[10^5], Divisible[FromDigits[c = Join[c, IntegerDigits[#, b]], b], #] &] (* _Robert Price_, Mar 11 2020 *)
%Y A029458 Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029458 nonn,base
%O A029458 1,2
%A A029458 _Olivier Gérard_
%E A029458 More terms from _David W. Wilson_