#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.print("Times 2 Table");
}

int n = 0;
void loop() {
  char line[41];
  sprintf( line, "2x%d=%2d", n, 2*n);
  lcd.setCursor(0,1);
  lcd.print(line);
  n++; n = n % 10;
  delay(1000);
}