I need explanation on " Write a function `sequence` that accepts an number (`int`) and

that **prints** a sequence of numbers that starts at the given

number and obeys the following rules:

* the number 1 is the last number in the sequence (e.g stop )

* if the number if even, the next number is half of it

* if the number is off, the next number is one more

Specifications:

* use a `while` loop

* print each number in the sequence one per line"

>>> sequence(3)

3

4

2

1

>>> sequence(4)

4

2

1