triangular number

Also known as trigonal number

figurate number

AI overview

I don't have enough information in the provided context to write an accurate overview of triangular numbers. The context only mentions "figurate number" as a category, but doesn't define what triangular numbers are or explain their significance.

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Wikidata facts

Image: Números triangulares.png

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Commons category: Triangular numbers

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wikidata.org

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Article

The first six triangular numbers (not starting with T0, but rather, T1) Triangular Numbers Plot The triangular numbers or triangle numbers are the sequence of positive integers that can be represented as a lattice of points arranged in an equilateral triangle. The triangular lattice representing the