bn:00358407n
Noun Concept
Categories: Figurate numbers
EN
Centered nonagonal number  Centered enneagonal number
EN
A centered nonagonal number is a centered figurate number that represents a nonagon with a dot in the center and all other dots surrounding the center dot in successive nonagonal layers. Wikipedia
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EN
A centered nonagonal number is a centered figurate number that represents a nonagon with a dot in the center and all other dots surrounding the center dot in successive nonagonal layers. Wikipedia
Subclass of centered polygonal number Wikidata
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