Serial.print(Value,HEX);

Projects Programming
5

Perhaps this:

void setup() {
   Serial.begin(9600);
}

void loop() 
{
int n;

  for (int n = 0; n <= 16; n++)
  {
    Serial.print("0x");
    Serial.print(n < 16 ? "0" : "");
    Serial.print(n, HEX);
    Serial.print(" ");
  }
  Serial.println();
}