a(n) = 5*a(n-2) + 2*a(n-3).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-3a(4) =3a(5) =-13a(6) =9a(7) =-59a(8) =19a(9) =-277a(10) =-23a(11) =-1347a(12) =-669a(13) =-6781a(14) =-6039a(15) =-35243a(16) =-43757a(17) =-188293a(18) =-289271a(19) =-1028979a(20) =-1822941a(21) =-5723437a(22) =-11172663a(23) =-32263067a(24) =-67310189a(25) =-183660661a(26) =-401077079a(27) =-1052923683a(28) =-2372706717a(29) =-6066772573