7p−9=−22 elp meh plz my dudes TwT

Ihave trouble finding the nth term of a linear sequence

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?