void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
  for(int i = 1; i < 5; i++){
    for(int j = 1; j < 5; j++){
      double ans = pow(i, j);
      Serial.print(ans);
      Serial.print(" ");
  }
  Serial.println();
  }
}
void loop() {
  // put your main code here, to run repeatedly:

}