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%I #24 Jul 04 2021 01:58:29
%S 1,7,9,11,183,256,303,1024,3072,3873,4647,8448,88561,200192,256512,
%T 420864,688373,769133,1016827,1399808,1760256,3889152,6503219,7724439
%N Numbers k that divide the (left) concatenation of all numbers <= k written in base 5 (most significant digit on left).
%C No other terms below 10^8.
%H <a href="/index/N#concat">Index entries for related sequences</a>
%t b = 5; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[#, b], c], b], #] &] (* _Robert Price_, Mar 12 2020 *)
%Y Cf. A007091.
%Y Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K nonn,base,more
%O 1,2
%A _Olivier Gérard_
%E Corrected by Andrew Gacek (andrew(AT)dgi.net), Feb 20 2000.
%E Corrected and more terms from Larry Reeves (larryr(AT)acm.org), May 24 2001
%E Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
%E a(17)-a(24) from _Max Alekseyev_, May 13 2011
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