Question 1195483
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Since nobody else has responded to your post after a couple of days, I will.<br>
I'm wondering why you feel it is "really important" for you to understand this sequence.  Being able to see patterns that generate the terms of the sequence is not an indication of problem-solving ability.<br>
This is more of a game than a math problem.  Finding a pattern that works is as much a matter of chance as anything else.  And you might find a pattern that works which is not the "right" pattern.<br>
Spend as much (or as little!) time as you want looking for an answer... but don't attach any importance to finding one.<br>