Wire.write()

Wire.write(value)
Wire.write(string)
Wire.write(data, length)

#include <Wire.h>
 
byte val = 0;
 
void setup()
{
  Wire.begin(); // join i2c bus
}
 
void loop()
{
  Wire.beginTransmission(44); // transmit to device #44 (0x2c)
                              // device address is specified in datasheet
  Wire.write(val);            // sends value byte  
  Wire.endTransmission();     // stop transmitting
 
  val++;        // increment value
  if(val == 64) // if reached 64th position (max)
  {
    val = 0;    // start over from lowest value
  }
  delay(500);
}