Item:Q8774: Difference between revisions
Created claim: subclass of (P1): pyramidal number (Q8775) |
Created claim: defining formula (P333): \frac{n(n+1)(5n-2)}{6} |
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Property / defining formula | |||
\frac{n(n+1)(5n-2)}{6} | |||
Property / defining formula: / rank | |||
Normal rank |