Item:Q8767: Difference between revisions
Created a new Item: centered decagonal number, subclass of centered polygonal number |
Changed claim: defining formula (P333): C_{k,n}={\frac {k}{2}}n(n-1)+1=5n^2-5n+1 |
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| Property / instance of | |||
| Property / instance of: centered polygonal number / rank | |||
Normal rank | |||
| Property / instance of: centered polygonal number / qualifier | |||
series ordinal: 10 | |||
| Property / instance of: centered polygonal number / qualifier | |||
| Property / defining formula | |||
C_{k,n}={\frac {k}{2}}n(n-1)+1=5n^2-5n+1 | |||
| Property / defining formula: / rank | |||
Normal rank | |||
| Property / defining formula: / qualifier | |||
in defining formula: n\geq {1},n\in \mathbb {N} | |||
| Property / defining formula: / qualifier | |||
