Coefficients of Chebyshev polynomials of the first kind: triangle of coefficients in expansion of cos(n*x) in descending powers of cos(x).

A028297

Coefficients of Chebyshev polynomials of the first kind: triangle of coefficients in expansion of cos(n*x) in descending powers of cos(x).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =-1a(4) =4a(5) =-3a(6) =8a(7) =-8a(8) =1a(9) =16a(10) =-20a(11) =5a(12) =32a(13) =-48a(14) =18a(15) =-1a(16) =64a(17) =-112a(18) =56a(19) =-7a(20) =128a(21) =-256a(22) =160a(23) =-32a(24) =1a(25) =256a(26) =-576a(27) =432a(28) =-120a(29) =9

External references