Englishenneadecagonal number
- nonadecagonal number
- 19-gonal number
Statements
![{\displaystyle {\frac {17n^{2}-15n}{2}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/994efbb84ed40f01cb98bfb2c78610a3e442b165)
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