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number > natural numbers > figurate number > polyhedral number > icosahedral number

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icosahedral number

An icosahedral number is a figurate number that represents an icosahedron. The nth icosahedral number is given by the formula

${\\displaystyle {n(5n^{2}-5n+2) \\over 2}}$

The first such numbers are 1, 12, 48, 124, 255, 456, 742, 1128, 1629, 2260, 3036, 3972, 5083, … (sequence A006564 in the OEIS).
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Icosahedral_number)

polyhedral number

nombre icosaédrique

francés

URI

http://data.loterre.fr/ark:/67375/PSR-KM9J4J44-Q

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