hi hows it going? i hope good but for me not that great cuz I don't get math!!!

I have been like trying to understand this question and it it taken me like one hour and it probably really easy but I am really fustrated!

george entered a function into his calculator andfound the following partail sums

s1=0.0016

s2= 0.0096

s3= 0.0496

s4= 0.2496

s5= 1.2496

determine the genral term of the corresponding sequence

Thanks for all your help!