Cyclotomic polynomials at x=2.

Terms

a(0) =2a(1) =1a(2) =3a(3) =7a(4) =5a(5) =31a(6) =3a(7) =127a(8) =17a(9) =73a(10) =11a(11) =2047a(12) =13a(13) =8191a(14) =43a(15) =151a(16) =257a(17) =131071a(18) =57a(19) =524287a(20) =205a(21) =2359a(22) =683a(23) =8388607a(24) =241a(25) =1082401a(26) =2731a(27) =262657a(28) =3277a(29) =536870911