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  1. Embed this notice
    Joshua Bowman (thalesdisciple@mathstodon.xyz)'s status on Saturday, 04-Mar-2023 11:01:30 JST Joshua Bowman Joshua Bowman
    in reply to

    We know that the Fibonacci (or Virahanka) numbers can be used to count how many ways to express each integer as a sum of 1s and 2s:
    1=1 (1 way)
    2=1+1=2 (2 ways)
    3=1+1+1=1+2=2+1 (3 ways)
    4=1+1+1+1=1+1+2=1+2+1=2+1+1=2+2 (5 ways)
    5=1+1+1+1+1=1+1+1+2=1+1+2+1=1+2+1+1=1+2+2=2+1+1+1=2+1+2=2+2+1 (8 ways)
    and so on. But what if we want to count the number of terms used in all these sums, or (equivalently) the average number of terms, or (again, equivalently) the average ratio of 1s to 2s? That’s the problem addressed in this post.
    https://thalestriangles.blogspot.com/2023/03/an-average-number-of-1s-and-2s.html
    #math #Fibonacci #Virahanka

    In conversation Saturday, 04-Mar-2023 11:01:30 JST from mathstodon.xyz permalink

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    1. No result found on File_thumbnail lookup.
      an average number of 1s and 2s
      The terms of the Virahanka–Fibonacci sequence \((V(n))_{n\ge0}\) ( OEIS A000045 , shifted to start with 1 instead of 0 at \(n=0\) ) count...
    • Embed this notice
      Joshua Bowman (thalesdisciple@mathstodon.xyz)'s status on Saturday, 04-Mar-2023 11:01:31 JST Joshua Bowman Joshua Bowman

      I’ve been on spring break this week, and so I’ve been catching up on things I’ve been meaning to do, like write this blog post: “an average number of 1s and 2s” https://thalestriangles.blogspot.com/2023/03/an-average-number-of-1s-and-2s.html
      #math #blog

      In conversation Saturday, 04-Mar-2023 11:01:31 JST permalink

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      1. No result found on File_thumbnail lookup.
        an average number of 1s and 2s
        The terms of the Virahanka–Fibonacci sequence \((V(n))_{n\ge0}\) ( OEIS A000045 , shifted to start with 1 instead of 0 at \(n=0\) ) count...
      表示名 repeated this.

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