## June 2017 Fiendish Function

The Fiendish Function posed during June 2017 had the following sample guesses and replies:

- 1
- 4
- 2
- 16
- 3
- 256
- 4
- 66
- 5
- 12
- 10
- 8

The rule was: "Add 2 to the power of the number's digits together, then add 2 to the power of the digits together".

Suppose the guess was 17:

- Take the number's digits, giving 1, 7
- Take 2 to the power of each digit, giving 2, 128
- Add these together, giving 130.
- Take the number's digits, giving 1, 3, 0
- Take 2 to the power of each digit, giving 2, 8, 1
- Add these together, giving 11.

So the result is 11.

## Earlier answers

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