Cyclotomic polynomials at x=7.

Terms

a(0) =7a(1) =6a(2) =8a(3) =57a(4) =50a(5) =2801a(6) =43a(7) =137257a(8) =2402a(9) =117993a(10) =2101a(11) =329554457a(12) =2353a(13) =16148168401a(14) =102943a(15) =4956001a(16) =5764802a(18) =117307a(20) =5649505a(21) =11898664849a(22) =247165843a(24) =5762401a(26) =12111126301