A triangular sequence of coefficients of even plus odd Chebyshev polynomials, A053120: q(x,n) = T(x,2*n-1)+T(x,2*n).
A137307
A triangular sequence of coefficients of even plus odd Chebyshev polynomials, A053120: q(x,n) = T(x,2*n-1)+T(x,2*n).
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =2a(5) =1a(6) =-3a(7) =-8a(8) =4a(9) =8a(10) =-1a(11) =5a(12) =18a(13) =-20a(14) =-48a(15) =16a(16) =32a(17) =1a(18) =-7a(19) =-32a(20) =56a(21) =160a(22) =-112a(23) =-256a(24) =64a(25) =128a(26) =-1a(27) =9a(28) =50a(29) =-120
External references
- oeis: A137307