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A029498 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 5 (most significant digit on right). 1

%I #21 Mar 12 2020 21:45:16

%S 1,7,16,96,103,112,224,864,6736,134208,292464,1000176,5891856,9647136

%N Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 5 (most significant digit on right).

%C This sequence differs from A061934 in that all least significant zeros are kept during concatenation.

%C No more terms < 10^7. - _Lars Blomberg_, Oct 02 2011

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

%e See A029495 for example.

%t b = 5; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* _Robert Price_, Mar 12 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 from Larry Reeves (larryr(AT)acm.org), May 25 2001

%E a(10)-a(11) from Larry Reeves (larryr(AT)acm.org), Jun 15 2001, Jan 16 2002

%E a(12)-a(14) from _Lars Blomberg_, Oct 02 2011

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Last modified May 17 12:26 EDT 2024. Contains 372600 sequences. (Running on oeis4.)