Puzzle No. 6

Last time, it was Dany who said the correct solution: the only way to avoid the garlic's smell was putting the two corks in the nose of our friend!! Congratulations to Dany for finding out the solution so quickly!

But now, the level of the puzzles will become difficult and harder to think. Are you ready for puzzle number six? Ok, let's go then:
If I give you this succession of numbers:

4 - 16 - 37 - 58 - ?- 145 - 42 - 20 - 4 - 16...

Could you tell me which is the number that must be putted when the question mark(?) is?

Clue: The Series ends in "20" and restarts again in "4".

Remember to think hard and do not look the answer!!!