a(n) = -5*a(n-1) + 8*a(n-2) + 6*a(n-3) - 4*a(n-4).

Terms

a(0) =1a(1) =0a(2) =2a(3) =-8a(4) =52a(5) =-312a(6) =1920a(7) =-11752a(8) =72040a(9) =-441448a(10) =2705368a(11) =-16579176a(12) =101601976a(13) =-622645288a(14) =3815745720a(15) =-23383962344a(16) =143303497848a(17) =-878204132520