There is a sequence: 1 49 16 25 36 49 64 81. What is the 200th number in this sequence?

There is a sequence: 1 49 16 25 36 49 64 81. What is the 200th number in this sequence?

40000=200X200

81.8.1.1/6.1/25. Alignment

81=9^2 8=8^1 1=7^0 1/6=6^(-1) 1/25=5^(-2)
That is 9 ^ 2 8 ^ 1 7 ^ 0 6 ^ (- 1) 5 ^ (- 2)

Fill in 1 / 6.1/4.3/8. (). (). 81 / 64

1 / 6, 1 / 4, 3 / 8, (9 / 16), (27 / 32), 81 / 64 the relationship between the former number and the latter number is multiplied by 3 / 2. For this kind of mathematical problem, we should consider from many aspects: mutual addition and subtraction, mutual multiplication and division, the relationship between squares, multiplication and addition, and so on

1,7,13,19,25

Plus 6