A029504 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 11 (most significant digit on right).

1, 5, 15, 24, 40, 69, 72, 75, 120, 167, 216, 280, 360, 536, 1192, 1240, 1360, 11280, 25195, 33216, 33984, 101328, 221640, 400479, 531000, 537640, 600104, 631155, 743085, 958785, 2660431, 2777800

Offset

1,2

Comments

This sequence differs from A061940 in that all least significant zeros are kept during concatenation.

No more terms < 10^7. - Lars Blomberg, Oct 06 2011

Links

Table of n, a(n) for n=1..32.

Index entries for related sequences

Example

See A029495 for example.

Mathematica

b = 11; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* Robert Price, Mar 12 2020 *)

Crossrefs

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

Sequence in context: A127256 A136139 A029480 * A354297 A066548 A075359

Adjacent sequences: A029501 A029502 A029503 * A029505 A029506 A029507

Keyword

nonn,base,more

Author

Olivier Gérard

Extensions

Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002; Aug 25, 2002

a(27)-a(32) from Lars Blomberg, Oct 06 2011

Status

approved