The odd composites c such that c=q*g*j*y/2 and q+g=j*y where q,g,j,y are distinct primes.

Terms

a(0) =105a(1) =195a(2) =231a(3) =399a(4) =627a(5) =897a(6) =935a(7) =1023a(8) =1443a(9) =1581a(10) =1729a(11) =2465a(12) =2915a(13) =2967a(14) =4123a(15) =4301a(16) =4623a(17) =4715a(18) =5487a(19) =7055a(20) =7685a(21) =7881a(22) =8099a(23) =9717a(24) =10707a(25) =11339a(26) =12099a(27) =12995a(28) =14993a(29) =16377