Triangular number: Difference between revisions
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The '''triangular number''' or '''triangle number''' (T<sub>n</sub>) gives the sum of integers starting at 1 up to n. It's the amount of objects in a dense planar equilateral arrangement. | {{wikipedia}}The '''triangular number''' or '''triangle number''' (T<sub>n</sub>) gives the sum of integers starting at 1 up to n. It's the amount of objects in a dense planar equilateral arrangement. | ||
Triangular numbers are used in the formation of [[highschool scales]]. | Triangular numbers are used in the formation of [[highschool scales]]. | ||
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== See also == | == See also == | ||
* [[OEIS: A000217]] | |||
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[[Category:Math]] | [[Category:Math]] | ||