A124785 - OEIS

%I #2 Mar 30 2012 17:26:22

%S 4,6,9,10,10,15,14,21,25,14,22,33,26,39,22,34,49,55,22,46,26,69,34,85,

%T 26,62,91,46,74,38,111,115,82,86,34,129,133,58,141,34,106,159,169,38,

%U 183,134,201,142,213,94,235,74,166,46,253,106,259,58,265,46,86,118,194

%N Semiprime sopfr of semiprimes A115585.

%C Cf. A001358 semiprimes, A001414 sopfr, A115585 Semiprimes with a semiprime sum of factors, A124786 Intersection of A115585 and A124785.

%F a(n)=sopfr(A115585(n))

%e a(3)=9 because A115585(3)=14=2*7=>2+7=9=3*3,

%e a(6)=15 because A115585(6)=26=2*13=>2+13=15=3*5.

%Y Cf. A001358, A001414, A115585, A124786.

%K nonn

%O 1,1

%A _Zak Seidov_, Nov 07 2006