Numbers k such that 3k-4, 3k-2, 3k+2, and 3k+4 are primes.

Terms

a(0) =3a(1) =5a(2) =35a(3) =65a(4) =275a(5) =495a(6) =625a(7) =695a(8) =1085a(9) =1155a(10) =1885a(11) =3145a(12) =4335a(13) =5215a(14) =5245a(15) =5355a(16) =6015a(17) =6305a(18) =6475a(19) =7005a(20) =7425a(21) =8435a(22) =10575a(23) =11615a(24) =14595a(25) =17115a(26) =18445a(27) =20995a(28) =22405a(29) =23165