Numbers k such that Phi(k, 12) is prime, where Phi is the cyclotomic polynomial.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =10a(5) =12a(6) =19a(7) =21a(8) =22a(9) =56a(10) =60a(11) =63a(12) =70a(13) =80a(14) =84a(15) =92a(16) =97a(17) =109a(18) =111a(19) =123a(20) =164a(21) =189a(22) =218a(23) =276a(24) =317a(25) =353a(26) =364a(27) =386a(28) =405a(29) =456