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.

A029499 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 6 (most significant digit on right).

Original entry on oeis.org

1, 2, 3, 5, 37, 73, 80, 104, 135, 149, 160, 170, 2860, 3547, 63335, 112405, 198734, 703957, 1353979
Offset: 1

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Author

Keywords

Comments

This sequence differs from A061935 in that all least significant zeros are kept during concatenation.
No more terms < 10^7. - Lars Blomberg, Oct 03 2011

Examples

			See A029495 for example.
		

Crossrefs

Programs

  • Mathematica
    b = 6; 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 and more terms from Larry Reeves (larryr(AT)acm.org), May 25 2001
a(18)-a(19) from Lars Blomberg, Oct 03 2011