Dying rabbits: a(n) = Fibonacci(n) for n <= 12; for n >= 13, a(n) = a(n-1) + a(n-2) - a(n-13).

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =5a(6) =8a(7) =13a(8) =21a(9) =34a(10) =55a(11) =89a(12) =144a(13) =233a(14) =376a(15) =608a(16) =982a(17) =1587a(18) =2564a(19) =4143a(20) =6694a(21) =10816a(22) =17476a(23) =28237a(24) =45624a(25) =73717a(26) =119108a(27) =192449a(28) =310949a(29) =502416