Smallest order of cyclotomic polynomial containing n or -n as a coefficient.

Terms

a(0) =0a(1) =105a(2) =385a(3) =1365a(4) =1785a(5) =2805a(6) =3135a(7) =6545a(8) =6545a(9) =10465a(10) =10465a(11) =10465a(12) =10465a(13) =10465a(14) =11305a(15) =11305a(16) =11305a(17) =11305a(18) =11305a(19) =11305a(20) =11305a(21) =15015a(22) =11305a(23) =17255a(24) =17255a(25) =20615a(26) =20615a(27) =26565a(28) =26565a(29) =26565