Scaled Chebyshev U-polynomials evaluated at sqrt(3)/2; expansion of 1/(1 - 3*x + 3*x^2).

Terms

a(0) =1a(1) =3a(2) =6a(3) =9a(4) =9a(5) =0a(6) =-27a(7) =-81a(8) =-162a(9) =-243a(10) =-243a(11) =0a(12) =729a(13) =2187a(14) =4374a(15) =6561a(16) =6561a(17) =0a(18) =-19683a(19) =-59049a(20) =-118098a(21) =-177147a(22) =-177147a(23) =0a(24) =531441a(25) =1594323a(26) =3188646a(27) =4782969a(28) =4782969a(29) =0