## June 2018 Fiendish Function

The Fiendish Function posed during June 2018 had the following sample guesses and replies:

- 1
- 3
- 2
- 5
- 3
- 9
- 4
- 62
- 5
- 24
- 10
- 4202

The rule was: "Multiply this number of twos together, reverse the order of the digits, then add one".

Suppose the guess was 13:

- Raise two to this power, giving 8192.
- Reverse the order of the digits, giving 2918.
- Add one, giving 2919.

So the result is 2919.

## Earlier answers

Here are the answers to the Fiendish Functions posted in earlier months: