|
%I #7 Jul 23 2013 13:20:23
%S 2,5,2,3,2,37,2,17,2,101,2,73,2,197,2,3,2,109,2,3,2,5,2,5,2,677,2,3,2,
%T 17,2,5,2,13,2,7,2,5,2,401,2,5,2,3,2,29,2,17,2,3,2,3,2,5,2,5,2,5,2,
%U 1801,2,5,2,3,2,4357,2,3,2,13,2,433,2,5477,2,3,2,5,2,3,2,5,2,3529,2,13
%N Smallest prime factor of n*rad(n)+1, where rad=A007947 (squarefree kernel).
%C a(n)=A020639(A078310(n)).
%H Reinhard Zumkeller, <a href="/A078311/b078311.txt">Table of n, a(n) for n = 1..10000</a>
%o (Haskell)
%o a078311 = a020639 . a078310 -- _Reinhard Zumkeller_, Jul 23 2013
%Y Cf. A078312.
%K nonn
%O 1,1
%A _Reinhard Zumkeller_, Nov 23 2002
|
