SEASON 1 EPISODE 18: Numbers
The 18th Episode of Season One is simply caalled “Numbers”. In the episode, Hurley finds that some of Rousseau’s documents contain the repeated numbers 4, 8, 15, 16, 23 and 42, the same numbers which Hurley had used to win a lottery jackpot. Hurley sets off on his own and finds Rousseau. Rousseau says that she does not know what the numbers mean: only that her party was drawn to the island by the radio transmission which was broadcasting the numbers. The numbers are revealed to be engraved on the side of the hatch. Flashbacks shows Hurley wins the lottery, and over the coming weeks, everyone around him suffers increasingly bad luck.