a(n) = 5*a(n-1) - 8*a(n-2), with a(0)=0, a(1)=1.

Terms

a(0) =0a(1) =1a(2) =5a(3) =17a(4) =45a(5) =89a(6) =85a(7) =-287a(8) =-2115a(9) =-8279a(10) =-24475a(11) =-56143a(12) =-84915a(13) =24569a(14) =802165a(15) =3814273a(16) =12654045a(17) =32756041a(18) =62547845a(19) =50690897a(20) =-246928275a(21) =-1640168551a(22) =-6225416555a(23) =-18005734367a(24) =-40225339395a(25) =-57080822039a(26) =36398604965a(27) =638639601137