Click here to win prizes by solving the puzzle Advent calendar.
Click here to win prizes by solving the puzzle Advent calendar.


Advent calendar 2018

24 December

The sequence of six numbers above has two properties:
  1. Each number is either 0, 1 or 2.
  2. Each pair of consecutive numbers adds to (strictly) less than 3.
Today's number is the number of sequences of six numbers with these two properties
Tags: numbers


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