Just press the green flag and watch the sequence appear. If you want to just see the sequence fast use turbo mode (shift while pressing green flag)
This was inspired by the video from the YouTube channel Numberphile - https://www.youtube.com/watch?v=FGC5TdIiT9U In short, the sequence adds 1, then 2, then 3 etc, but if the sequence can go backwards without going into the negatives or using a number already used, it sill jump backwards. This gives a sequence like 0, 1, 3, 6, 2, 7, 13, 20, 12, etc. The numbers are visualized by drawing a semi-circle jumping to the next number. The video explains it much better though, so I recommend checking it out :) Also, this is like the first project I've uploaded in literally years, as I was just messing around and thought why not upload it. So I hope you like it :P