A029535 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 18 (most significant digit on right).

1, 17, 323, 8429, 49127, 98753, 185509, 4300535, 8296187

Offset

1,2

Comments

This sequence differs from A061971 in that all least significant zeros are removed before concatenation.

No more terms < 10^7. [Lars Blomberg, Sep 22 2011]

Links

Table of n, a(n) for n=1..9.

Index entries for related sequences

Example

See A029519 for example.

Mathematica

b = 18; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[IntegerReverse[#, b], b], c], b], #] &] (* Robert Price, Mar 13 2020 *)

Crossrefs

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

Sequence in context: A221583 A091464 A015693 * A099275 A299706 A318597

Adjacent sequences: A029532 A029533 A029534 * A029536 A029537 A029538

Keyword

nonn,base,more

Author

Olivier Gérard

Extensions

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

Additional comments from Larry Reeves (larryr(AT)acm.org), Jun 01 2001

a(5)-a(7) from Larry Reeves Jul 16 2001

a(8)-a(9) from Lars Blomberg, Sep 22 2011

Status

approved