Coefficient array for the powers of x^2 of the square of the even-indexed Chebyshev C polynomials.

Terms

a(0) =4a(1) =4a(2) =-4a(3) =1a(4) =4a(5) =-16a(6) =20a(7) =-8a(8) =1a(9) =4a(10) =-36a(11) =105a(12) =-112a(13) =54a(14) =-12a(15) =1a(16) =4a(17) =-64a(18) =336a(19) =-672a(20) =660a(21) =-352a(22) =104a(23) =-16a(24) =1a(25) =4a(26) =-100a(27) =825a(28) =-2640a(29) =4290