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bn:02874565n
Noun Concept
Categories: Integer sequences, Factorial and binomial topics, Matching, Permutations, Enumerative combinatorics
EN
telephone number  Involution number
EN
In mathematics, the telephone numbers or the involution numbers form a sequence of integers that count the ways n people can be connected by person-to-person telephone calls. Wikipedia
English:
mathematics
Definitions
Sources
EN
In mathematics, the telephone numbers or the involution numbers form a sequence of integers that count the ways n people can be connected by person-to-person telephone calls. Wikipedia
Mathamatical sequence of integers Wikidata
Wikipedia
EN
telephone number (mathematics)
Wikidata
EN
Telephone number
Wikipedia Redirections
EN
Involution number

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