%I #11 Jun 25 2018 22:58:05
%S 4,6,10,14,16,22,24,26,34,36,38,40,46,54,56,58,60,62,64,74,82,84,86,
%T 88,90,94,96,100,104,106,118,122,126,132,134,136,140,142,144,146,150,
%U 152,156,158,160,166,178,184,194,196,198,202,204,206,210,214,216,218,220
%N Even numbers with an even number of prime factors (counted with multiplicity).
%H Harry J. Smith, <a href="/A063745/b063745.txt">Table of n, a(n) for n = 1..1000</a>
%e a(2)=6, which is even with even number of prime factors, i.e., 2.
%t Select[2*Range[200],EvenQ[PrimeOmega[#]]&] (* _Harvey P. Dale_, Mar 07 2015 *)
%o (PARI) { n=0; forstep (m=2, 10^9, 2, if (bigomega(m)%2 == 0, write("b063745.txt", n++, " ", m); if (n==1000, break)) ) } \\ _Harry J. Smith_, Aug 29 2009
%Y Cf. A046337.
%K nonn
%O 1,1
%A _Shyam Sunder Gupta_, Feb 16 2002