Pentagonal number

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

A pentagonal number is a figurate number that extends the concept of triangular and square numbers to the pentagon, but, unlike the first two, the construction of pentagonal numbers creates a pattern of inside dots that are not rotationally symmetrical.

Excerpt from the Wikipedia article “Pentagonal number”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Timrem, Public domain, via Wikimedia Commons.