// Set pin 0 as an output
const int ledPin = 0;

void blink_led(int times) {
  for (int i = 0; i < times; i++) {
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(300);
  }
}

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  for (int i = 0; i < 5; i++) {
    if (i % 2 == 0) {       // if i is even
      blink_led(2);
    } else {
      blink_led(1);         // if i is odd
    }
    delay(2000);
  }
}