A029523 Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 6 (most significant digit on right).

1, 5, 19, 35, 55, 85, 505, 12047, 113935, 1107173

Offset

1,2

Comments

This sequence differs from A061959 in that all least significant zeros are removed before concatenation.

No more terms < 10^7. [Lars Blomberg, Sep 05 2011]

Links

Table of n, a(n) for n=1..10.

Index entries for related sequences

Example

See A029519 for example.

Mathematica

b = 6; 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: A324557 A255413 A031041 * A289289 A213631 A242589

Adjacent sequences: A029520 A029521 A029522 * A029524 A029525 A029526

Keyword

nonn,base

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), May 25 2001

a(8)-a(9) from Larry Reeves (larryr(AT)acm.org), Jun 11 2001

a(10) from Lars Blomberg, Sep 05 2011

Status

approved