A061977 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 24 (most significant digit on right).

1, 23, 253, 673, 31007

Offset

1,2

Comments

This sequence differs from A029541 in that all least significant zeros are kept during concatenation.

The next term is > 410000. - _Larry Reeves_, Jan 16 2002

Links

Table of n, a(n) for n=1..5.

Index entries for related sequences

Example

See A061955 for example.

Mathematica

b = 24; c = {}; Select[Range[10^4], Divisible[FromDigits[
c = Join[Reverse[IntegerDigits[#, b]], c], b], #] &] (* Robert Price, Mar 09 2020 *)

Prog

(PARI) lista(nn, m=24) = my(c, t); for(k=1, nn, t+=m^c*fromdigits(Vecrev(digits(k, m)), m); c+=logint(m*k, m); if(t%k==0, print1(k, ", "))); \\ Jinyuan Wang, Dec 05 2020

Crossrefs

Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.

Sequence in context: A242279 A003910 A003911 * A034777 A047648 A010939

Adjacent sequences: A061974 A061975 A061976 * A061978 A061979 A061980

Keyword

nonn,base,more

Author

Larry Reeves (larryr(AT)acm.org), May 24 2001

Extensions

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

Status

approved