A really interesting article, which I’m trying to get my head around.

Looking at the pattern is the sum
1 + 2 + 3 + 2 + 4 + 6 + 3 + 6 + 9 = 36 = (6)2 = T3 3 meant to read T2 3? Otherwise could you explain where the cubed part of the equation came from?

Thank you.