Cyclotomic polynomials at x=4.

Terms

a(0) =4a(1) =3a(2) =5a(3) =21a(4) =17a(5) =341a(6) =13a(7) =5461a(8) =257a(9) =4161a(10) =205a(11) =1398101a(12) =241a(13) =22369621a(14) =3277a(15) =49981a(16) =65537a(17) =5726623061a(18) =4033a(19) =91625968981a(20) =61681a(21) =12783421a(22) =838861a(24) =65281a(26) =13421773a(27) =68719738881