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 A029498 #21 Mar 12 2020 21:45:16
%S A029498 1,7,16,96,103,112,224,864,6736,134208,292464,1000176,5891856,9647136
%N A029498 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 5 (most significant digit on right).
%C A029498 This sequence differs from A061934 in that all least significant zeros are kept during concatenation.
%C A029498 No more terms < 10^7. - _Lars Blomberg_, Oct 02 2011
%H A029498 <a href="/index/N#concat">Index entries for related sequences</a>
%e A029498 See A029495 for example.
%t A029498 b = 5; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* _Robert Price_, Mar 12 2020 *)
%Y A029498 Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029498 nonn,base,more
%O A029498 1,2
%A A029498 _Olivier Gérard_
%E A029498 Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
%E A029498 Additional comments from Larry Reeves (larryr(AT)acm.org), May 25 2001
%E A029498 a(10)-a(11) from Larry Reeves (larryr(AT)acm.org), Jun 15 2001, Jan 16 2002
%E A029498 a(12)-a(14) from _Lars Blomberg_, Oct 02 2011