Item:Q8766: Difference between revisions
Created claim: instance of (P2): centered polygonal number (Q8768) |
Created claim: defining formula (P333): C_{9,n}={\frac {9}{2}}n(n-1)+1={{9n^{2}-9n+2} \over 2} |
||
| (One intermediate revision by the same user not shown) | |||
| Property / subclass of | |||
| Property / subclass of: figurate number / rank | |||
Normal rank | |||
| Property / defining formula | |||
C_{9,n}={\frac {9}{2}}n(n-1)+1={{9n^{2}-9n+2} \over 2} | |||
| Property / defining formula: / rank | |||
Normal rank | |||
| Property / defining formula: / qualifier | |||
| Property / defining formula: / qualifier | |||
in defining formula: n\geq {1},n\in \mathbb {N} | |||
