Item:Q8765: Difference between revisions

@@ Property / instance of @@
+square number
@@ Property / instance of: square number / rank @@
+Normal rank
@@ Property / subclass of @@
+figurate number
@@ Property / subclass of: figurate number / rank @@
+Normal rank
@@ Property / defining formula @@
+ $C_{8,n}={\frac {8}{2}}n(n-1)+1={(2n-1)}^{2}$ 
C_{8,n}={\frac {8}{2}}n(n-1)+1={(2n-1)}^2
+Normal rank
+criterion used: centered polygonal number
+in defining formula:  $n\geq {1},n\in \mathbb {N}$ 
n\geq {1},n\in \mathbb {N}