I just came up with this one, what is the value of N in this sequence
7,5,1,2,4,8,N?
9
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2$\begingroup$ Is "N?" the blank you want filled, or is the N part of the sequence? $\endgroup$– Gareth McCaughan ♦Commented Aug 26, 2016 at 14:17
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$\begingroup$ @GarethMcCaughan N is the value, I've updated the question to clarify this. Unfortunately I couldn't post the question without a sentence ending punctuation mark $\endgroup$– SteveCommented Aug 26, 2016 at 14:19
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$\begingroup$ OK, that's clearer. And would you like to indicate whether the sequence continues on after the number N or steps there, and; whether it continues backwards before the 7 or starts there? (You might prefer not to, of course.) $\endgroup$– Gareth McCaughan ♦Commented Aug 26, 2016 at 14:21
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2$\begingroup$ inspired by sandbox,i think all of these sequence puzzle should go through oeis $\endgroup$– NumberknotCommented Aug 26, 2016 at 14:24
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1$\begingroup$ @Steve In the help center you can read about what is on topic. That page also has several links at the bottom that give more information on what makes a good puzzle for this site. $\endgroup$– Scott MCommented Aug 26, 2016 at 14:50
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1 Answer
$\begingroup$
$\endgroup$
2
N is
7
because
each number is the previous number times 2, mod 9.
