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Hopefully people will find this fun and not too easy.

Which number comes next in the sequence?

-,-,4,3,6,6,3,13,22,?
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    $\begingroup$ What are the first two numbers? Did you mean to not reveal them by putting dashes? $\endgroup$
    – Wais Kamal
    Commented Sep 9, 2018 at 17:03
  • $\begingroup$ Yes they are meant to be hidden. $\endgroup$
    – Simd
    Commented Sep 9, 2018 at 17:06
  • $\begingroup$ Just as a suggestion, you should post questions not too often (once or twice a day is fine) so that you can put more effort into making it. You can also combine multiple puzzles into one if they are related :D $\endgroup$
    – Kevin L
    Commented Sep 10, 2018 at 4:33

1 Answer 1

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Given that the last two numbers can be formed by

$ 4 + 6 + 3 = 13 $ (summing visible number #1, #3, #5)
$ 3 + 6 + 13 = 22 $ (summing visible number #2, #4, #6)

My answer for the next number is

$ 6 + 3 + 22 = 31 $ (summing visible number #3, #5, #7)

This would mean that the first two numbers are the solutions to

$ a + 4 + 6 = 6 \implies a = -4 $
$ b + 3 + 6 = 3 \implies b = -6 $

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  • $\begingroup$ Can you also fill in the invisible numbers? $\endgroup$
    – Simd
    Commented Sep 11, 2018 at 12:29
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    $\begingroup$ That means the first and second invisible numbers are Rot13(artngvir sbhe naq artngvir guerr, erfcrpgviryl), assuming you are correct (which I am certain you are) :P $\endgroup$
    – Mr Pie
    Commented Sep 11, 2018 at 12:29
  • $\begingroup$ @user477343 That's not the same thing I got (before or after that stealth edit) :) $\endgroup$
    – hvd
    Commented Sep 11, 2018 at 12:33
  • $\begingroup$ I am glad you noticed, because I was originally wrong, heheh :P $\endgroup$
    – Mr Pie
    Commented Sep 11, 2018 at 12:36
  • $\begingroup$ A very nice answer. $\endgroup$
    – Simd
    Commented Sep 11, 2018 at 13:04

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