Hello again (I’m stuck again),

Given the following E sequence: 1,2,1,3,2,4,2,6,3,8,3,12.....

I’ve been trying this for a bit and can’t seem to come up with a recurrence relation that makes sense so I can find the following numbers in the sequence.

the numbers increases then decreases. Thats what is making me stuck.

Help is much appreciated!