Het volgende nummer is:
28
Methode:
I plugged the numbers into hexadecimal to text convertor and found the following sequence: #%&
. I found this interesting because on my keyboard, it's the shift position for the values 3, 5, and 7 on a computer.

Therefore, the next logical step is Shift-9, or (. The full correct sequence is #%&(
, and (
in hex is the number we need.
Ik denk dat de 1 en 4 rode haring zijn, of gewoon cool omdat ik vandaag heb geleerd over SOH en EOT.