Difference between revisions of "Triangular numbers"
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=References= | =References= | ||
| + | * {{PaperReference|Triangular numbers|1974|V.E. Hoggatt, Jr|author2=Marjorie Bicknell|next=findme}} | ||
{{:Polygonal numbers footer}} | {{:Polygonal numbers footer}} | ||
[[Category:SpecialFunction]] | [[Category:SpecialFunction]] | ||
Revision as of 01:14, 30 May 2017
The triangular numbers $T_n$ represent the number of ways to draw an equilateral triangle as in the image below.
Graphical representation of the first six triangular numbers.
