Even semiprimes of the form prime(n)*prime(n+1) - 1.

Terms

a(0) =14a(1) =34a(2) =142a(3) =898a(4) =1762a(5) =5182a(6) =19042a(7) =79522a(8) =213442a(9) =359998a(10) =412162a(11) =627238a(12) =685582a(13) =777922a(14) =1192462a(15) =1299478a(16) =1695202a(17) =2005006a(18) =2585662a(19) =2663398a(20) =3849322a(21) =4536898a(22) =5143822a(23) =5588446a(24) =5673922a(25) =6594502a(26) =7225342a(27) =8363638a(28) =8538058a(29) =12110278