Cyclotomic polynomials at x=1.

Terms

a(0) =0a(1) =2a(2) =3a(3) =2a(4) =5a(5) =1a(6) =7a(7) =2a(8) =3a(9) =1a(10) =11a(11) =1a(12) =13a(13) =1a(14) =1a(15) =2a(16) =17a(17) =1a(18) =19a(19) =1a(20) =1a(21) =1a(22) =23a(23) =1a(24) =5a(25) =1a(26) =3a(27) =1a(28) =29a(29) =1