tetrahedral numbers

A form of tetrahedral number — A number which results from the summation of consecutive triangular numbers, starting from 1. If the triangular numbers in such a summation are depicted as horizontal triangular arrays of units then these arrays can be stacked vertically to yield a tetrahedral array.

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Meanings

noun
  1. pluralplural of tetrahedral number
Cite this entry
APA

tetrahedral numbers. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/tetrahedral%20numbers

MLA

“tetrahedral numbers.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tetrahedral%20numbers. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “tetrahedral numbers,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/tetrahedral%20numbers.

Source: tetrahedral numbers on Wiktionary, CC BY-SA 4.0.