DK-GEORGMOHR 2012 Problem 3
Georg is putting his stamps in a new album. On the first page he places one stamp and then on every page just as many or twice as many stamps as on the preceding page. In this way he ends up precisely having put all stamps in the album. How few pages are sufficient for him?
Dataset text AI-MO AoPS. Quoted with source.
Official text: Georg Mohr Contest 2012 official paper, page 1.
Solutions
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