Friday, December 23, 2005

Next in line

Hey, I'm taking the holidays off, but feel free to look around and try some of the puzzles. Look in the archives and strain your brain a little. Make sure you enjoy your holidays!

What is the next number in this series?

5 25 61 113 181 ...


  1. Merry Christmas to you. Get some puzzles for Christmas.

  2. Merry Christmas to you too, Karnov. As well as to everyone else who sees this! (and yes, I did get some puzzles for Xmas!). I hope you did too.

    Answer: 265. The series consists of the sums of the squares of 1 and 2, 3 and 4, 5 and 6, etc.


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