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#octagonal_number

Octagonal number

An octagonal number is a figurate number that gives the number of points in a certain octagonal arrangement. The octagonal number for n is given by the formula 3n2 − 2n, with n > 0. The first few octagonal numbers are1, 8, 21, 40, 65, 96, 133, 176, 225, 280, 341, 408, 481, 560, 645, 736, 833, 936

Mon 8th

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Octagonal number Centered octagonal number Octagon 1000 (number) Square number 5000 (number) 400 (number) 3000 (number) 600 (number) 800 (number)
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