Lazy caterer's sequence

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Notion

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Science and technology

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What Wikipedia says

The lazy caterer's sequence, more formally known as the central polygonal numbers, describes the maximum number of pieces of a disk (a pancake or pizza is usually used to describe the situation) that can be made with a given number of straight cuts.

Excerpt from the Wikipedia article “Lazy caterer's sequence”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ArnoldReinhold, CC BY-SA 3.0, via Wikimedia Commons.