int wait = 200;


void setup() {

  for (int pin=13; pin>3; pin--) {
    pinMode(pin, OUTPUT);
  }

}

void loop() {

  digitalWrite(4, HIGH);
  for (int pin=5; pin<=13; pin++) {
    digitalWrite(pin, HIGH);
    delay(wait);
  }

  for (int pin=13; pin>3; pin--) {
    digitalWrite(pin, LOW);
    delay(wait);
  }

}