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

void setup() {
  for (int 1=0; i<numLed; i++) {
    pinMode(baseLed + i, OUTPUT) ;
    digitalWrite(baseLed + i, LOW) ;
  }
}
void cycle() {
  for (int 1=0; i<numLed; i++) { 
    digitalWrite(baseLed + i, HIGH);
    delay(delayTime);
    digitalWrite(baseLed + i, LOW);
  }
}

void loop() {
  cycle();
}