Was that the end of it? Not if you put stock in a fanciful explanation for the deaths in office of the presidents who were elected in a year ending in zero from 1840 (starting with Harrison) to 1960 (John Kennedy). "Those who look to make sense of eerie coincidences have come up with an explanation to account for this string of deaths: an ancient Indian curse, supposedly administered by Tecumseh himself..." says Snopes in "The Curse of Tecumseh."
"Another version attributes the curse to Tenskwatawa... 'Harrison will die I tell you,' the Prophet reportedly said. 'And after him, every Great Chief chosen every 20 years thereafter will die. And when each one dies, let everyone remember the death of my people.' "
It turns out that there's no record of either Tenskwatawa or Tecumseh ever saying such a thing. In fact, the story has all the hallmarks of a retroactive invention, once people noticed that a number of zero-year presidents had died in office. Moreover, no zero-year president has died in office in almost 50 years, which would seem to argue for "eerie coincidence."