Numbers k such that the k-th cyclotomic polynomial has a root mod 13.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =12a(6) =13a(7) =26a(8) =39a(9) =52a(10) =78a(11) =156a(12) =169a(13) =338a(14) =507a(15) =676a(16) =1014a(17) =2028a(18) =2197a(19) =4394a(20) =6591a(21) =8788a(22) =13182a(23) =26364a(24) =28561a(25) =57122a(26) =85683a(27) =114244a(28) =171366a(29) =342732