Duplicate of A123965.

Terms

a(0) =1a(1) =3a(2) =-1a(3) =8a(4) =-6a(5) =1a(6) =21a(7) =-25a(8) =9a(9) =-1a(10) =55a(11) =-90a(12) =51a(13) =-12a(14) =1a(15) =144a(16) =-300a(17) =234a(18) =-86a(19) =15a(20) =-1a(21) =377a(22) =-954a(23) =951a(24) =-480a(25) =130a(26) =-18a(27) =1a(28) =987a(29) =-2939