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(Q18451091)
English
icosagonal number
figurate number
20-gonal number
In more languages
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No description defined
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Statements
instance of
type of integer
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subclass of
polygonal number
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follows
enneadecagonal number
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followed by
icosihenagonal number
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defining formula
1
+
1
+
21
{\displaystyle 1+1+21}
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maintained by WikiProject
WikiProject Mathematics
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Identifiers
OEIS ID
A051872
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Sitelinks
Wikipedia
(3 entries)
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emlwiki
Nùmer icośagonèl
huwiki
Húszszögszámok
svwiki
Ikosagontal
Wikibooks
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Wikinews
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Wikiquote
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Wikisource
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Wikiversity
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Wiktionary
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