PresidentsUSA.net has a list of U.S. presidents that gives their terms of office and the names of their vice presidents. Clicking on the name of a president in the list opens a page with more information about that president. WhiteHouse.gov lists the presidents by century.
The United States has had 44 presidencies as of 2015; however, there have only been 43 presidents. Grover Cleveland counts twice as his two terms as president were non-consecutive. The first five presidents were George Washington, John Adams, Thomas Jefferson, James Madison and James Monroe. The five most recent presidents were Ronald Reagan, George H.W. Bush, William J. Clinton, George W. Bush and Barack Obama, who is the current president.