First I'll say that I enjoyed the earlier puzzles in this series, and thought that you could conclude that they related to a real world concept without too much trouble.

However, I don't think I would have ever figured out this puzzle without hints. I can't imagine concluding that the sequence is the cumulative total of days of the month using the numbers alone.

Anyone else have trouble with this one? I did spend ages on the others thinking they were linear number rules. Maybe these could have had contextual hints or something to steer you in the right direction.

However, I don't think I would have ever figured out this puzzle without hints. I can't imagine concluding that the sequence is the cumulative total of days of the month using the numbers alone.

Anyone else have trouble with this one? I did spend ages on the others thinking they were linear number rules. Maybe these could have had contextual hints or something to steer you in the right direction.

Two more hints later and.....yeah.

And knowing the solution to the first puzzle was related to a "real world" concept helped me know this one was too.