中心つき四角数
1. Centered square numberIn elementary number theory, a centered square number is a centered figurate number that gives the number of dots in a square with a dot in the center and all other dots surrounding the center dot in successive square layers. That is, each centered square number equals the number of dots within a given city block distance of the center dot on a regular square lattice.
Read “Centered square number” on English Wikipedia
Read “中心つき四角数” on Japanese Wikipedia
Read “Centered square number” on DBpedia
Read “Centered square number” on English Wikipedia
Read “中心つき四角数” on Japanese Wikipedia
Read “Centered square number” on DBpedia
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