From 85ee27687aee9723153bd2f32ed902fac7297757 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C9=AA=C9=B4=E1=B4=80=CA=8F=E1=B4=80=E1=B4=8B=20P?=
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 <87496159+Harpia-Vieillot@users.noreply.github.com>
Date: Wed, 3 Nov 2021 16:02:17 +0530
Subject: [PATCH] Add Hexagonal Numbers in directory (#5696)

Yesterday hexagonal_numbers.py was created. Added that file in this list(maths/series/hexagonal_numbers.py)