From my understanding it would be roughly:
https://gist.github.com/bpicolo/32a7fc775ce1810c88a0
we decompose an array of size 35 into: an array of size 1 followed by arrays of sizes 4, 9, 16, 5
Then again, maybe he means `mentally decompose` in terms of pretending they're separate arrays? I interpreted it as `visualize this data structure`.