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.

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

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%I A029486 #26 Jun 29 2024 10:51:13
%S A029486 1,111,269,512,1536,4499,4608,7401,9216,23552,420864,492544,3635712,
%T A029486 7943997,8175681,11616768,12344832,20399616,49798656,77196800,
%U A029486 91584000,162777600,210598400,261962240,305856000,379123200,1484144097,3318331392,8416131072
%N A029486 Numbers k that divide the (left) concatenation of all numbers <= k written in base 17 (most significant digit on left).
%C A029486 No other terms below 3*10^10.
%H A029486 <a href="/index/N#concat">Index entries for related sequences</a>
%t A029486 b = 17; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[#, b], c], b], #] &] (* _Robert Price_, Mar 12 2020 *)
%Y A029486 Cf. A029447-A029470, A029471-A029485, A029487-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
%K A029486 nonn,base,more
%O A029486 1,2
%A A029486 _Olivier Gérard_
%E A029486 More terms from Andrew Gacek (andrew(AT)dgi.net), Feb 21 2000
%E A029486 More terms from Larry Reeves (larryr(AT)acm.org), Jan 14 2002
%E A029486 Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002
%E A029486 a(13)-a(21) from _Max Alekseyev_, May 15 2011
%E A029486 a(22)-a(29) from _Jason Yuen_, Jun 29 2024