cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A029498 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 5 (most significant digit on right).

Original entry on oeis.org

1, 7, 16, 96, 103, 112, 224, 864, 6736, 134208, 292464, 1000176, 5891856, 9647136
Offset: 1

Views

Author

Olivier Gérard

Keywords

Comments

This sequence differs from A061934 in that all least significant zeros are kept during concatenation.
No more terms < 10^7. - Lars Blomberg, Oct 02 2011

Examples

			See A029495 for example.

Links

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[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* Robert Price, Mar 12 2020 *)

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(10)-a(11) from Larry Reeves (larryr(AT)acm.org), Jun 15 2001, Jan 16 2002
a(12)-a(14) from Lars Blomberg, Oct 02 2011
Showing 1-1 of 1 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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