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 A029499 #18 Mar 12 2020 21:15:37
%S A029499 1,2,3,5,37,73,80,104,135,149,160,170,2860,3547,63335,112405,198734,
%T A029499 703957,1353979
%N A029499 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 6 (most significant digit on right).
%C A029499 This sequence differs from A061935 in that all least significant zeros are kept during concatenation.
%C A029499 No more terms < 10^7. - _Lars Blomberg_, Oct 03 2011
%H A029499 <a href="/index/N#concat">Index entries for related sequences</a>
%e A029499 See A029495 for example.
%t A029499 b = 6; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* _Robert Price_, Mar 12 2020 *)
%Y A029499 Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029499 nonn,base,more
%O A029499 1,2
%A A029499 _Olivier Gérard_
%E A029499 Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
%E A029499 Additional comments and more terms from Larry Reeves (larryr(AT)acm.org), May 25 2001
%E A029499 a(18)-a(19) from _Lars Blomberg_, Oct 03 2011