<Tr> <Th> Vice President </Th> <Th_colspan="2"> Vice-Presidency </Th> <Th> Subsequent service </Th> </Tr> <Tr> <Td> John Adams </Td> <Td> </Td> <Td> 1789--1797 </Td> <Td> 2nd President of the United States (1797--1801) </Td> </Tr> <Tr> <Td> Thomas Jefferson </Td> <Td> </Td> <Td> 1797--1801 </Td> <Td> 3rd President of the United States (1801--1809) </Td> </Tr> <Tr> <Td> John C. Calhoun </Td> <Td> 7 </Td> <Td> 1825--1832 </Td> <Td> U.S. Senator from South Carolina (1832--1843 and 1845--1850); 16th U.S. Secretary of State (1844--1845) </Td> </Tr>

Who were the vice presidents that became presidents