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.
%I A104358 #28 Mar 06 2023 23:33:37 %S A104358 1,5,11,59,179,1259,11,7559,37799,415799,71,227,5981,9067,1135133999, %T A104358 11717,61,79,5499724229999,97,1543,31,29220034833989999,8937119,181, %U A104358 401,124759,443851,31,2141,3082663,8191,37230797,1697,1408101540804746673385499999,10613,73,59,107,79,617,163,173 %N A104358 Smallest prime factor of A104357(n) = A104350(n) - 1. %C A104358 a(n) = A020639(A104357(n)). %H A104358 Tyler Busby, <a href="/A104358/b104358.txt">Table of n, a(n) for n = 2..181</a> (terms 2..120 from Chai Wah Wu, terms 121..160 from Max Alekseyev) %H A104358 Reinhard Zumkeller, <a href="/A104350/a104350.txt">Products of largest prime factors of numbers <= n</a> %Y A104358 Cf. A104357, A104359, A104360, A104361, A104362, A104363, A104364, A104366, A054415, A057713. %K A104358 nonn %O A104358 2,2 %A A104358 _Reinhard Zumkeller_, Mar 06 2005 %E A104358 Typo in data corrected by _Gionata Neri_, Oct 20 2017