neither
It is 32768.
the series can be 1,-4,16,-64
They are square numbers
A single number, such as 256196144100643616 does not represent a sequence.
the geometric formula for 4 16 36 64 and 100 is 4
neither
It is 32768.
the series can be 1,-4,16,-64
They are square numbers
.... 49, 36, 25, 16, 9, 4 and 1
A single number, such as 256196144100643616 does not represent a sequence.
4 16 36 I'd say 64 100 144 Why ? 4 16 36... if you take the square root you get 2 4 6 so you can reason the sequence is 2 4 6 8 10 12 14... If you square that again you get 4 16 36 64 100 144 196 :-)
16 and 256
25, 36, 49, 64, 81, 100...
√64 x √16 = 8 x 4 = 32
36/64 = 9/16