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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =-3a(6) =-7a(7) =-3a(8) =5a(9) =25a(10) =45a(11) =-3a(12) =-107a(13) =-191a(14) =-175a(15) =253a(16) =1045a(17) =1189a(18) =-171a(19) =-3547a(20) =-7527a(21) =-4603a(22) =11497a(23) =33945a(24) =40869a(25) =-10487a(26) =-141071a(27) =-248407a(28) =-120131a(29) =421141