Numbers n such that F_n(x) and F_n(1-x) have a common factor mod 2, with F_n(x) = U(n-1,x/2) the monic Chebyshev polynomials of second kind; this lists only the primitive elements of the set.
A094425
Numbers n such that F_n(x) and F_n(1-x) have a common factor mod 2, with F_n(x) = U(n-1,x/2) the monic Chebyshev polynomials of second kind; this lists only the primitive elements of the set.
Terms
- a(0) =5a(1) =6a(2) =17a(3) =31a(4) =33a(5) =63a(6) =127a(7) =129a(8) =171a(9) =257a(10) =511a(11) =683a(12) =2047a(13) =2731a(14) =2979a(15) =3277a(16) =3641a(17) =8191a(18) =28197a(19) =43691a(20) =48771a(21) =52429a(22) =61681a(23) =65537a(24) =85489a(25) =131071
External references
- oeis: A094425