Villegas-Zagier polynomials (listing coefficients from lowest to highest degree).

Terms

a(0) =0a(1) =1a(2) =0a(3) =0a(4) =-3a(5) =0a(6) =2a(7) =0a(8) =0a(9) =9a(10) =-2a(11) =0a(12) =0a(13) =-18a(14) =0a(15) =0a(16) =-27a(17) =0a(18) =0a(19) =36a(20) =0a(21) =0a(22) =108a(23) =0a(24) =0a(25) =81a(26) =0a(27) =152a(28) =0a(29) =0