%I #20 Dec 05 2020 10:40:59
%S 1,2,3,4,5,6,8,9,10,12,15,25,29,53,110,177,237,255,2260,3214,4313,
%T 4563,7595,20220,35139,167134,180319,186885,315850,439975,559740,
%U 4393188,8414132,8434510
%N Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 16 (most significant digit on right).
%C This sequence differs from A029509 in that all least significant zeros are removed before concatenation.
%C No more terms < 10^7. - _Lars Blomberg_, Oct 22 2011
%H <a href="/index/N#concat">Index entries for related sequences</a>
%e See A061931 for example.
%t b = 16; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, IntegerDigits[IntegerReverse[#, b], b]], b], #] &] (* _Robert Price_, Mar 08 2020 *)
%o (PARI) lista(nn, m=16) = my(s, t); for(k=1, nn, s=k/m^valuation(k, m); while(s, t=t*m+s%m; s\=m); if(t%k==0, print1(k, ", "))); \\ _Jinyuan Wang_, Dec 05 2020
%Y Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K nonn,base,more
%O 1,2
%A Larry Reeves (larryr(AT)acm.org), May 24 2001
%E Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002; Aug 25 2002
%E a(32)-a(34) from _Lars Blomberg_, Oct 22 2011
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