[Community Puzzle] Fibonacci's Rabbit

Hi,

For Test 7 it should be:

T0: 8
T1: 0 
T2: 0
T3: 8 (T0)
T4: 8 (T0 + T1)
T5: 8 (T0 + T1 + T2)
T6: 8 (T1 + T2 + T3)
T7: 16 (T2 + T3 + T4)
...

The initial pairs are only old enough to produce new pairs starting at T3