G.f.: Product_{n>=1} (1 - Lucas(n)*x^n + (-1)^n*x^(2*n)) where Lucas(n) = A000204(n).

Terms

a(0) =1a(1) =-1a(2) =-4a(3) =-1a(4) =1a(5) =11a(6) =7a(7) =25a(8) =18a(9) =-11a(10) =-1a(11) =0a(12) =-325a(13) =-199a(14) =122a(15) =-1364a(16) =-843a(17) =550a(18) =0a(19) =11a(20) =123a(21) =0a(22) =39650a(23) =24476a(24) =-15126a(25) =0a(26) =271443a(27) =164194a(28) =-103682a(29) =-1364