Since this appears to be the start of the Fibonacci sequence, the next number would be 21, which is found by adding the two previous numbers (8 + 13 = 21).
The next number is -21
10
225
the answer will be 21
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
21
21
21.
21
A single number, such as 12848384 does not make a series.
The next number is 25 but there are the sequence is infinite so there can be no end to the sequence.
12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50