The numerals indicate the consecutive time in office served by a single person. For example, George Washington served two consecutive terms and is counted as the first President (not the first and second). Gerald Ford assumed the Presidency after the resignation of Richard Nixon, serving out the remainder of what would have been Nixon's second term. The fact that Ford was not voted into office does not affect the numbering, which makes him the 38th President. Also, under this numbering Grover Cleveland is counted twice, having served non-consecutive terms.