A029517 - OEIS

%I #18 Mar 13 2020 11:27:09

%S 1,2,3,4,6,8,10,12,20,23,3726,4900,5120,7452,8350,59708,483713,

%T 1565449,2048350,2109790,2968633,4123900,6745900,6883670

%N Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 24 (most significant digit on right).

%C This sequence differs from A061953 in that all least significant zeros are kept during concatenation.

%C No more terms < 10^7. [_Lars Blomberg_, Oct 14 2011]

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

%e See A029495 for example.

%t b = 24; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* _Robert Price_, Mar 13 2020 *)

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

%E Additional comments and more terms from Larry Reeves (larryr(AT)acm.org), May 25 2001

%E a(17)-a(24) from _Lars Blomberg_, Oct 14 2011