8 LEDs light up in sequence

_8_LEDs_light_up_in_sequence.ino

int gpioCount=8;
int led_pin[9]={16,14,12,13,2,5,4,1};

void setup() {
  for (byte i=0; i<gpioCount; i++) {
     pinMode(led_pin[i], OUTPUT);
  }
}

void loop() {
  for (byte i=0; i<gpioCount; i++) {
     digitalWrite(led_pin[i], LOW); //turn LED on, it is acive low on the ESP-07
     delay(250);  
     digitalWrite(led_pin[i], HIGH); 
     delay(250);  
  }
}