Thanks for your five stars Sarve! You need a data connection for the clues.
For level 41: number 1 is in 1st position so press 1st button, number 2 is in 6th position so press button 6, number 3 is in 3rd position so press button 3, and so on...
So the order to press the buttons is 1 6 3 4 2 9 7 5 8
@BartBonte