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Centered pentagonal number
Y 90%
Centered figurate number that represents a pentagon with a dot in the center
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A centered pentagonal number is a centered figurate number that represents a pentagon with a dot in the center and all other dots surrounding the center in successive pentagonal layers. The centered pentagonal number for n is given by the formula

Instance of
type of integer
Subclass of
Figurate number
Centered polygonal number
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