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A029541 Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 24 (most significant digit on right). 1

%I #22 Jul 25 2021 20:49:34

%S 1,23,29,169,575,887,3151,3473,4495,5395,11431,372077,3543935

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

%C This sequence differs from A061977 in that all least significant zeros are removed before concatenation.

%C No more terms < 10^7. [_Lars Blomberg_, Sep 30 2011]

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

%e See A029519 for example.

%t b = 24; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[IntegerReverse[#, b], b], c], 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 GĂ©rard_

%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(13) from _Lars Blomberg_, Sep 30 2011

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)