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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A029486 Numbers k that divide the (left) concatenation of all numbers <= k written in base 17 (most significant digit on left).

Original entry on oeis.org

1, 111, 269, 512, 1536, 4499, 4608, 7401, 9216, 23552, 420864, 492544, 3635712, 7943997, 8175681, 11616768, 12344832, 20399616, 49798656, 77196800, 91584000, 162777600, 210598400, 261962240, 305856000, 379123200, 1484144097, 3318331392, 8416131072
Offset: 1

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Keywords

Comments

No other terms below 3*10^10.

Crossrefs

Programs

  • Mathematica
    b = 17; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[#, b], c], b], #] &] (* Robert Price, Mar 12 2020 *)

Extensions

More terms from Andrew Gacek (andrew(AT)dgi.net), Feb 21 2000
More terms from Larry Reeves (larryr(AT)acm.org), Jan 14 2002
Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
a(13)-a(21) from Max Alekseyev, May 15 2011
a(22)-a(29) from Jason Yuen, Jun 29 2024
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