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 A029457 #12 Jul 04 2021 01:59:10
%S A029457 1,2,3,4,6,11,12,15,16,18,22,24,29,33,36,44,45,48,55,66,72,87,88,99,
%T A029457 121,132,144,154,168,176,192,198,216,224,242,252,258,264,288,297,308,
%U A029457 336,352,363,369,378,396,432,448,462,484,504,528,561,576,594,616,672
%N A029457 Numbers k that divide the (right) concatenation of all numbers <= k written in base 12 (most significant digit on left).
%H A029457 Robert Price, <a href="/A029457/b029457.txt">Table of n, a(n) for n = 1..348</a>
%t A029457 b = 12; c = {}; Select[Range[10^5], Divisible[FromDigits[c = Join[c, IntegerDigits[#, b]], b], #] &] (* _Robert Price_, Mar 11 2020 *)
%Y A029457 Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029457 nonn,base
%O A029457 1,2
%A A029457 _Olivier Gérard_