Item:Q8773: Difference between revisions

@@ Property / subclass of @@
+pyramidal number
@@ Property / subclass of: pyramidal number / rank @@
+Normal rank
@@ Property / subclass of: pyramidal number / qualifier @@
+follows: pentagonal pyramidal number
@@ Property / subclass of: pyramidal number / qualifier @@
+followed by: heptagonal pyramidal number
@@ Property / subclass of: pyramidal number / qualifier @@
+series ordinal: 6
@@ Property / defining formula @@
+ ${\frac {n(n+1)(4n-1)}{6}}$ 
{\frac {n(n+1)(4n-1)}{6}}
@@ Property / defining formula: ${\frac {n(n+1)(4n-1)}{6}}$ / rank @@
+Normal rank