int ledPin = 13;
int myArray[] = {300,300,300,600,600,600,300,300,300};

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

void loop(){
  for(int i=0;i<9; i++){
    digitalWrite(ledPin, HIGH);
    delay(myArray[i]);
    digitalWrite(ledPin,LOW);
    delay(300);
  }
  delay(1000);
}