Triangle of coefficients of Chebyshev's U(n,x) polynomials (exponents in decreasing order).

Terms

a(0) =1a(1) =2a(2) =0a(3) =4a(4) =0a(5) =-1a(6) =8a(7) =0a(8) =-4a(9) =0a(10) =16a(11) =0a(12) =-12a(13) =0a(14) =1a(15) =32a(16) =0a(17) =-32a(18) =0a(19) =6a(20) =0a(21) =64a(22) =0a(23) =-80a(24) =0a(25) =24a(26) =0a(27) =-1a(28) =128a(29) =0