The growth rate of items per day may may seem absurd, but it’s actually much less than the acceleration in the 12 Days of Christmas song.

https://explainxkcd.com/3019/

  • Tudsamfa@lemmy.world
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    24 days ago

    (n*(n+1)/2 = 25*13 =325

    Never mind the fact that the “correct” number of days on an advent calender is 24.

    • Iron Lynx@lemmy.world
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      24 days ago

      For one, it looks to me like the triangle numbers, which for triangle number Tn = (n+1) choose 2.

      So for a correct nested advent calendar of 24 days, it’s T24 = (24+1) choose 2 = 300

      • Iron Lynx@lemmy.world
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        24 days ago

        Also, it appears that they created the terminal function that does that in a very compact notation, so another correct way to write down this sum is “24?” Where n? = n + (n-1)?