What is the 30th number in the following sequence?
0, 2, 4, 12, 8, 20, 24, 56, 16, 36, ...
I'm not sure what would be good hints, or how much further out I should list the sequence. I figure the first ten values should be a good start, but I can add or confirm more if needed.
BTW, The first six are sufficient to show that this sequence does not appear on the Online Encyclopedia of Integer Sequences.