Triangle T(n,k) = A053120(n,k)+A053120(n,n-k) of symmetrized Chebyshev coefficients, read by rows, 0<=k<=n.

A140883

Triangle T(n,k) = A053120(n,k)+A053120(n,n-k) of symmetrized Chebyshev coefficients, read by rows, 0<=k<=n.

Terms

    a(0) =2a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =4a(7) =-3a(8) =-3a(9) =4a(10) =9a(11) =0a(12) =-16a(13) =0a(14) =9a(15) =16a(16) =5a(17) =-20a(18) =-20a(19) =5a(20) =16a(21) =31a(22) =0a(23) =-30a(24) =0a(25) =-30a(26) =0a(27) =31a(28) =64a(29) =-7

External references