The range between 0 and 255 is divided into 8 ranges by default. They are 0-31, 32- 63, 64-95, etc. As you can see all of your elements are in the second range, except for the one with the value 31. The count is the number of times a number in one range occurs horizontally adjacent to another in another range. You have 19 pairs where the side-by-side pixels are both in range 2, and only one pairing, when it's looking at the very lower right, where there is a pairing between a number in range 2 (33) and a number in range 1 (31). I know it can be kind of tricky, so do you understand that explanation?
You can adjust the window size and the range size. You can have a 256 by 256 array if you want. See my attached demo.
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