-2
$\begingroup$

I can see that the length of each missing subsequence is greater by one than the length of the previous one. But I can't figure out how to determine its start number.

$\endgroup$
  • $\begingroup$ Can you clarify what you are asking? $\endgroup$ – Techidiot Jan 5 '17 at 18:49
  • $\begingroup$ I'm asking for the continuation of the sequence, i.e. the next element of it $\endgroup$ – Photon Jan 5 '17 at 19:00
  • $\begingroup$ Do you know the answer? What if the sequence is incorrect? $\endgroup$ – Techidiot Jan 5 '17 at 19:03
  • $\begingroup$ No, I don't know the answer $\endgroup$ – Photon Jan 5 '17 at 19:04
1
$\begingroup$

The next values would be

21, 22, 28, 29, 30....

The reason for this

the pattern that repeats is i+pn, i+pn, 1+pn, 1+pn, i+pn, 1+pn, 1+pn repeat
where pn = previous number in the sequence
i's value in the sequence constantly increases by 1 so the next sequence would be
4+pn, 5+pn, 1+pn, 1+pn, 6+pn, 1+pn, 1+pn
15, 20, 21, 22, 28, 29, 30

$\endgroup$
  • $\begingroup$ Is there enough information in this sequence to justify this pattern? $\endgroup$ – Aza Jan 5 '17 at 20:10
  • $\begingroup$ @Emrakul I edited to show that the pattern continued from the numbers in the question. It was my best shot at trying to explain the sequence. $\endgroup$ – Zachstein Jan 5 '17 at 20:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.