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English: The first five Heptagonal numbers ( in yellow ), in result of geometric-shaped numeral sequence. Every external heptagon includes the internal ones as overall sum.
Български: Хептагонални числа - поредица от последователни цифри, изпълваща се геометрически във формата на седмостен. Сумата на всяко седмоъгълно ниво се явява хептагонално число.
Date
Source Own work
Author Димитър Найденов / Dimìtar Nàydenov

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24 January 2013

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Date/TimeThumbnailDimensionsUserComment
current15:42, 24 January 2013Thumbnail for version as of 15:42, 24 January 2013751 × 734 (3.92 MB)Utar SigmalUser created page with UploadWizard

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