A triangular array made from polynomial coefficients of A049614.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-2a(5) =1a(6) =1a(7) =-3a(8) =3a(9) =-1a(10) =1a(11) =-4a(12) =6a(13) =-4a(14) =1a(15) =1a(16) =-8a(17) =22a(18) =-28a(19) =17a(20) =-4a(21) =1a(22) =-12a(23) =54a(24) =-116a(25) =129a(26) =-72a(27) =16a(28) =1a(29) =-36