Numbers k such that 2^k + 3^k is a semiprime.

Terms

a(0) =3a(1) =6a(2) =7a(3) =8a(4) =10a(5) =11a(6) =12a(7) =14a(8) =16a(9) =22a(10) =32a(11) =34a(12) =38a(13) =82a(14) =83a(15) =106a(16) =128a(17) =149a(18) =218a(19) =223a(20) =334a(21) =412a(22) =436a(23) =599a(24) =647a(25) =916a(26) =1373a(27) =4414a(28) =7246a(29) =8423