triangular number
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English[edit]
Noun[edit]
triangular number (plural triangular numbers)
- (mathematics) Any integer that is the sum of n natural numbers from 1 to n.
- Ten is a triangular number being the sum of 1, 2, 3, and 4.
Synonyms[edit]
Hyponyms[edit]
Translations[edit]
an integer which is the sum of n natural numbers
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