int Led = 3;
#define numDim 6
const int Dim[numDim] = {0,84.15,168.3,255,168.3,84.15};


void setup() 
{
  pinMode(Led, OUTPUT);
}

void loop() 
{ 
  for (int i=0; i<numDim; i++) 
  {
     analogWrite(Led, Dim[i]);
     delay(200);
  }
}