tetrahedral number (Q8770): Difference between revisions

Latest revision as of 14:31, 13 May 2023

polyhedral number representing a tetrahedron

Language	Label	Description	Also known as
English	tetrahedral number	polyhedral number representing a tetrahedron

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3

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{\frac {n(n+1)(n+2)}{6}}

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@@ Property / subclass of @@
+pyramidal number
@@ Property / subclass of: pyramidal number / rank @@
+Normal rank
@@ Property / subclass of: pyramidal number / qualifier @@
+followed by: square pyramidal number
@@ Property / subclass of: pyramidal number / qualifier @@
+series ordinal: 3
@@ Property / defining formula @@
+ ${\frac {n(n+1)(n+2)}{6}}$ 
{\frac  {n(n+1)(n+2)}{6}}
@@ Property / defining formula: ${\frac {n(n+1)(n+2)}{6}}$ / rank @@
+Normal rank