Find the 7th term of the Fibonacci sequence where F1=1F_1 = 1F1=1, F2=1F_2 = 1F2=1, and Fn=Fn−1+Fn−2F_n = F_{n-1} + F_{n-2}Fn=Fn−1+Fn−2 for n≥3n \geq 3n≥3.
F7=13F_7 = 13F7=13
F7=11F_7 = 11F7=11
F7=15F_7 = 15F7=15
F7=21F_7 = 21F7=21