List of NHL playoff series

Columns: Opponent | S | Occurrences | GP | Rec | %
Buffalo Sabres | 2 | 1978 , 2007 | 9 | 0-2 | .000 | Calgary Flames | 1 | 1980 | 4 | 1-0 | 1.000 | Colorado Avalanche | 1 | 1995 | 6 | 1-0 | 1.000 | Florida Panthers | 1 | 1997 | 5 | 1-0 | 1.000 | Ottawa Senators ( original ) | 1 | 1930 | 2 | 1-0 | 1.000 | Pittsburgh Pirates | 1 | 1928 | 2 | 1-0 | 1.000

Example questions:
What is the number of seasons in which the NY Rangers 's playoff opponent was founded in 1917 ? | What is the number of seasons in which the NY Rangers 's playoff opponent was founded in 1972 ? | What is the number of seasons in which the NY Rangers 's playoff opponent played their home games on Broad Street since their inception ? | What is the number of seasons in which the NY Rangers 's playoff opponent is frequently referred to in English and French as the Habs ? | What is the number of seasons in which the NY Rangers 's playoff opponent has been in existence since 1924 ?

Answers:
8 | 8 | 11 | 16 | 10