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 A029496 #28 Jan 14 2025 11:10:00
%S A029496 1,7,8,112,424,595,1997,2336,2455,33265,2475701,9363208,15402464
%N A029496 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 3 (most significant digit on right).
%C A029496 This sequence differs from A061932 in that all least significant zeros are kept during concatenation.
%C A029496 No more terms < 10^7. [_Lars Blomberg_, Oct 02 2011]
%H A029496 <a href="/index/N#concat">Index entries for related sequences</a>
%e A029496 See A029495 for example.
%t A029496 b = 3; c = {}; Select[Range[10^4], Divisible[FromDigits[
%t A029496 c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* _Robert Price_, Mar 12 2020 *)
%Y A029496 Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029496 nonn,base,more
%O A029496 1,2
%A A029496 _Olivier Gérard_
%E A029496 Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
%E A029496 Additional comments from Larry Reeves (larryr(AT)acm.org), May 25 2001
%E A029496 a(10) from Larry Reeves, Jan 16 2002
%E A029496 a(11)-a(12) from _Lars Blomberg_, Oct 02 2011
%E A029496 a(13) from _Chai Wah Wu_, Jul 28 2020