I'm new to arduino and coding in general so I'm sure the solution is quite simple. However I've had trouble finding anything to explain or help out with this problem. I've been trying to get a function I'd created to run a small Piezo buzzer through a range of frequencies based off of a function I'd made: F=f(2)^(n/12) where F = the output frequency, f = the open or 'starting' frequency, and n is the dependent value that can shoot off to whatever desired value. The issue is F always ends up being some wonky value that's nowhere relative to what it should be. I'd typed out whats below but it spits out a multiple lines of 440s, 441s, 442s, and so on. I'd also like to get the decimal place to the thousandths if possible:
int n; //Note above open frequency
int F; //Product note
void setup() {
Serial.begin(9600);
n=0;
}
void loop() {
F=220*2^(n/12); //220 stands for open frequency value
Serial.println(F);
delay(500);
n++;
}