%I #2 Mar 30 2012 18:40:00
%S 2,3,4,6,5,8,7
%N Numbers of primes n needed to sum to semiprime without multiplicity.
%e a(3)=4 because 2*7=14=2+2+5+5;
%e a(4)=6 because 3*5=15=2+2+2+3+3+3.
%Y Cf. A001358.
%K nonn
%O 1,1
%A _Giovanni Teofilatto_, Apr 21 2005