The next number is -21
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
d
12 because they are decreasing by increments of 6
21
X
c
D
c
vampire academy
A single number, such as 12848384 does not make a series.
The next number is -21
I'm convinced that 3,840 is.
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
The next two letters are likely C & U. There are at least 2 patterns in these letters. FIrst is the list of vowels that make up every other letter. Then the letters alternate from the ends of the alphabet. If there is a Z, a B, then a Y, then C would likely be next, and then X. But there would be whatever vowel in sequence next.
A single number, such as 364758 does not describe a sequence, nor a series.
THE NEXT IS SWORD AND SHIELD THE SERIES IN 2020