A104358 - OEIS

%I #28 Mar 06 2023 23:33:37

%S 1,5,11,59,179,1259,11,7559,37799,415799,71,227,5981,9067,1135133999,

%T 11717,61,79,5499724229999,97,1543,31,29220034833989999,8937119,181,

%U 401,124759,443851,31,2141,3082663,8191,37230797,1697,1408101540804746673385499999,10613,73,59,107,79,617,163,173

%N Smallest prime factor of A104357(n) = A104350(n) - 1.

%C a(n) = A020639(A104357(n)).

%H 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 Reinhard Zumkeller, <a href="/A104350/a104350.txt">Products of largest prime factors of numbers <= n</a>

%Y Cf. A104357, A104359, A104360, A104361, A104362, A104363, A104364, A104366, A054415, A057713.

%K nonn

%O 2,2

%A _Reinhard Zumkeller_, Mar 06 2005

%E Typo in data corrected by _Gionata Neri_, Oct 20 2017