Well i tried it out, but im getting wayyyyyyyy to big of a answer..... with this codeCode:#include <FPT.h> int main() { double n,a,b,c; n=inD(); a=1; b=1; while(n>1){ a= pow(n,2); a=a+2; n=n-1; b=pow(n,2); c=(b/a) +2; n=n-1; } if(n==1){ a=pow(n,2); c=(c/a)+1; } outD(4/c); }