a(n) = -a(n-2) + 2*a(n-4) - a(n-10).

Terms

a(0) =1a(1) =0a(2) =0a(3) =2a(4) =3a(5) =-2a(6) =-3a(7) =6a(8) =9a(9) =-11a(10) =-16a(11) =23a(12) =34a(13) =-47a(14) =-69a(15) =95a(16) =140a(17) =-195a(18) =-287a(19) =396a(20) =583a(21) =-809a(22) =-1191a(23) =1648a(24) =2426a(25) =-3361a(26) =-4948a(27) =6852a(28) =10087a(29) =-13970