Phil Dissonance on Nostr: It's clever... I think you are essenrially using (n+1)² = n² + 2n + 1 where a = n² ...

It's clever... I think you are essenrially using

(n+1)² = n² + 2n + 1

where a = n² and b = 2n + 1 ... you are starting at those values for n = 1 and then use it to compute the n = 2 squarw and then since b = 2n + const you have to increase it by 2 in each step