Added nth_sgonal_num.py (#8753)

* Added nth_sgonal_num.py

* Update and rename nth_sgonal_num.py to polygonal_numbers.py

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Co-authored-by: Tianyi Zheng <tianyizheng02@gmail.com>

Rohan Saraogi committed 2y ago

0cae02451a214cd70b36f2bf0b7a043c25aea99d

Parent: 153c35e

Committed by GitHub <noreply@github.com> on 9/7/2023, 7:52:36 AM