The sequence appears to be a combination of prime numbers and their squares. The prime numbers in the sequence are 2, 3, 5, and 47. The squares of these prime numbers are 4, 9, 25, and 2209. The rest of the numbers in the sequence do not follow a clear pattern based on prime numbers or their squares.
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V= 47. 81 + 47 - 13= 47.
There are total 11 perfect squares between 10 to 200, which are 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196 :)
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144
4, 9, 16, 25, 36, 49, 64, 81
They are all perfect squares.