a(n) = (-a(n-1) * a(n-6) + a(n-2) * a(n-5)) / a(n-7) with a(n) = 1 if abs(n) < 4, a(11) = 4.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =-1a(7) =2a(8) =-3a(9) =3a(10) =-3a(11) =4a(12) =-2a(13) =8a(14) =9a(15) =17a(16) =29a(17) =50a(18) =83a(19) =107a(20) =56a(21) =239a(22) =-243a(23) =1103a(24) =-2351a(25) =3775a(26) =-7227a(27) =14463a(28) =-18648a(29) =55283