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