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... > mathematical analysis > calculus > sequence > integer sequence > figurate number > centered polygonal numbers > centered heptagonal number
number > natural numbers > figurate number > centered polygonal numbers > centered heptagonal number

Terme préférentiel

centered heptagonal number  

Définition

  • A centered heptagonal number is a centered figurate number that represents a heptagon with a dot in the center and all other dots surrounding the center dot in successive heptagonal layers. The centered heptagonal number for n is given by the formula
    .
    The first few centered heptagonal numbers are 1, 8, 22, 43, 71, 106, 148, 197, 253, 316, 386, 463, 547, 638, 736, 841, 953 (sequence A069099 in the OEIS).
    (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Centered_heptagonal_number)

Concept générique

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URI

http://data.loterre.fr/ark:/67375/PSR-CSLTS7XX-H

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