hi!
how we can find an sequence Term for set of numbers
1-numbers are always in order
2-if we have n numbers n/2 numbers are always present
for example we have:

Input:0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30

And Result:

Output-->2*X,x=[0..15]

i think this is very difficult whats your comment?
what computer field or algorithm can help me?
thank you