A137458 - OEIS

%I #3 Mar 30 2012 18:40:44

%S 2,3,5,2,11,13,17,3,2,29,31,5,41,43,47,2,59,3,67,11,73,79,83,13,2,101,

%T 5,17,109,113,127,3,137,139,149,2,157,163,167,29,179,181,191,31,11,

%U 199,211,5,2,3,233,41,241,13,257,43,269,271,277,47

%N Prime(core(n)).

%C Prime(Squarefree part of n).

%F a(n) = A000040(A007913(n)).

%Y Cf. A000040, A007913.

%K easy,nonn

%O 1,1

%A _Jonathan Vos Post_, Apr 19 2008