A061958 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 5 (most significant digit on right).

1, 32, 304, 639, 704, 903, 3151, 4112, 6713, 34992, 96977, 2628797, 3070243, 3661679, 8665399

Offset: 1

Author

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

Keywords

• nonn
• base
• more

Comments

This sequence differs from A029522 in that all least significant zeros are kept during concatenation.

No more terms < 10^7.

Examples

			See A061955 for example.
		

Links

• Index entries for related sequences

Crossrefs

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

Programs

Mathematica

b = 5; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[Reverse[IntegerDigits[#, b]], c], b], #] &] (* Robert Price, Mar 07 2020 *)

Extensions

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

a(12)-a(15) from Lars Blomberg, Aug 26 2011