int baseLed = 2;
int numLed = 5;
int delayTime=100;

void setup() {
  for(int i=0; i<numLed; i++){
    pinMode(baseLed+i, OUTPUT);
    digitalWrite(baseLed+i, LOW);
  }
}

void cycle() {
  for(int i=0; i<numLed; i++) {
    digitalWrite(baseLed+i, HIGH);
    delay(delayTime);
    digitalWrite(baseLed+i, LOW);


  }
}

void loop() {
  cycle();
}