How many perfect matchings does the “ladder” with 2n nodes (Figure 10.11) have?

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 39SE: How many arrangements can be made from the letters of the word “mountains” if all the vowels must...
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How many perfect matchings does the “ladder” with 2n nodes (Figure 10.11) have?

 

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