1+2^35
Sn=a1(q^n-1)/(q-1)
Lynn wrote out the formula represented by the square game using magic power as ink, then turned to the apprentices who were still horrified by the exponential growth, and exclaimed loudly,
"Why don't you write down this formula?"
Johnny and the others hastily flipped open their pages, picked up their feather pens, and copied down the formula they didn't understand at all. Ailoke, who was standing by looking dumbfounded, was the perfect example—a consequence of not studying advanced mathematics!
"Professor Lynn..." Ailoke turned towards Lynn, stammering with eyes brimming with tears; he was on the verge of crying out loud.
"Ailoke, didn't I just hear you say that you are quite good at arithmetic?" Lynn asked.
I didn't, I haven't, don't talk nonsense...
Ailoke shook his head frantically, trying to deny it, but Lynn simply waved his hand and continued speaking.
