centered nonagonal number (Q1587799)

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subclass of centered polygonal number

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Language	Label	Description	Also known as
English	centered nonagonal number	subclass of centered polygonal number

Statements

instance of

type of integer

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subclass of

centered polygonal number

series ordinal

9

follows

centered octagonal number

followed by

centered decagonal number

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defining formula

${\displaystyle C_{9,n}={\frac {9}{2}}n(n-1)+1={{9n^{2}-9n+2} \over 2}}$

criterion used

centered polygonal number

in defining formula

${\displaystyle n\geq {1},n\in \mathbb {N} }$

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maintained by WikiProject

WikiProject Mathematics

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Identifiers

Freebase ID

/m/04j1pf

1 reference

stated in

Freebase Data Dumps

publication date

28 October 2013

OEIS ID

A060544

0 references

 

Sitelinks

Wikipedia(11 entries)

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• arwiki عدد ممركز تساعي
• emlwiki Nùmer enagonèl sentrê
• enwiki Centered nonagonal number
• frwiki Nombre ennéagonal centré
• huwiki Középpontos kilencszögszámok
• itwiki Numero ennagonale centrato
• jawiki 中心つき九角数
• rowiki Număr centrat nonagonal
• ruwiki Центрированное девятиугольное число
• svwiki Centrerat nonagontal
• tawiki மையப்படுத்தப்பட்ட நவகோண எண்

Wikibooks(0 entries)

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Wikinews(0 entries)

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Wikiquote(0 entries)

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Wikisource(0 entries)

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Wikiversity(0 entries)

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Wikivoyage(0 entries)

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Wiktionary(0 entries)

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Multilingual sites(0 entries)

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