According to Wittgenstein's Finite Rule Paradox every finite sequence of numbers can be a described in infinitely many ways and so can be continued any of these ways - some simple, some complicated but all equally valid.
Furthermore, even if you could define what a simple answer might look like, it will depend on the values of W and Y, which are unknown.
80
40 5 10 20 40 80 160.......double the number each time.
If you mean: 5 10 20 40 then it is 80
Double it every time and so the next number will be 80
The pattern is to divide by 5, so the next number would be 40
The next number in the sequence is 480
If the last number is 1/3 (it should be), the next number is 5 and 1/3
The next number in the sequence 5-7-13-31 is 69.
The next number in the sequence will be 56.
The nest number in the sequence is 18. Note that the difference between each number and the next number in the sequence follows the simple sequence of 1,2,3,4. Obviously the next in the sequence of increases is 5, so 13+5=18.
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
The next number in the sequence is 27.