A029486 - OEIS

%I #26 Jun 29 2024 10:51:13

%S 1,111,269,512,1536,4499,4608,7401,9216,23552,420864,492544,3635712,

%T 7943997,8175681,11616768,12344832,20399616,49798656,77196800,

%U 91584000,162777600,210598400,261962240,305856000,379123200,1484144097,3318331392,8416131072

%N Numbers k that divide the (left) concatenation of all numbers <= k written in base 17 (most significant digit on left).

%C No other terms below 3*10^10.

%H <a href="/index/N#concat">Index entries for related sequences</a>

%t b = 17; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[#, b], c], b], #] &] (* _Robert Price_, Mar 12 2020 *)

%Y Cf. A029447-A029470, A029471-A029485, A029487-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.

%K nonn,base,more

%O 1,2

%A _Olivier Gérard_

%E More terms from Andrew Gacek (andrew(AT)dgi.net), Feb 21 2000

%E More terms from Larry Reeves (larryr(AT)acm.org), Jan 14 2002

%E Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002

%E a(13)-a(21) from _Max Alekseyev_, May 15 2011

%E a(22)-a(29) from _Jason Yuen_, Jun 29 2024