A029516 - OEIS

%I #20 Mar 13 2020 12:53:13

%S 1,11,33,48,112,165,176,209,528,720,1584,2123,2717,6919,9680,18080,

%T 23991,47597,58656,75213,106815,111392,253792,278245,343409,502523,

%U 528128,934560

%N Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 23 (most significant digit on right).

%C This sequence differs from A061952 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 = 23; 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, Aug 25 2002

%E a(28) from _Lars Blomberg_, Oct 14 2011