Semiprimes of the form p(6p - 1).

Terms

a(0) =22a(1) =51a(2) =145a(3) =287a(4) =1717a(5) =2147a(6) =3151a(7) =5017a(8) =11051a(9) =13207a(10) =16801a(11) =20827a(12) =26867a(13) =63551a(14) =68587a(15) =71177a(16) =76501a(17) =96647a(18) =112477a(19) =147737a(20) =159251a(21) =232657a(22) =237407a(23) =308947a(24) =314417a(25) =342487a(26) =433897a(27) =480251a(28) =587501a(29) =602617