Arduino Sketch - simple blink LEDs
I put this material together from various sources. No guarantees are made.
// =======================================================================
// Arduino Sketch - simple blink LEDs 
// =======================================================================

// ---- setup function - runs once when reset button pressed or board powered on

void setup()
{
  // initialize GIOs
  pinMode(13, OUTPUT);
  pinMode( 5, OUTPUT);
  pinMode( 6, OUTPUT);
  pinMode( 7, OUTPUT);
  pinMode( 8, OUTPUT);
  pinMode( 9, OUTPUT);
  // Initialize the serial port - Use one of these rates:
  // 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800,
  // 38400, 57600, or 115200.
  Serial.begin(14400);
}

// ---- blink LED

void blink_led(int led)
{
  digitalWrite(led, HIGH);     // turn the LED on
  delay(300);                  // wait for 3/10 second
  digitalWrite(led, LOW);      // turn the LED off
}

// ---- Triple Blink LED

void triple_blink(int led)
{
  blink_led(led);              // first  blink
  delay(500);                  // pause  after blink
  blink_led(led);              // second blink
  delay(500);                  // pause  after blink
  blink_led(led);              // third  blink
  delay(1000);                 // final  pause after blink
}

// ---- main loop - run forever

void loop()
{
  Serial.println("Call triple blink for each LED");
  Serial.flush();

  triple_blink(13);
  triple_blink(5);
  triple_blink(6);
  triple_blink(7);
  triple_blink(8);
  triple_blink(9);
}