2
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I understand that a term is the same as the "reading" of the previous one. The second term is equal to 1 amount of 1 in the first term = 11. The third term is equal to amount of 1 in the second term 1 = 21.
Is there any way to deduce a general rule?

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5
  • $\begingroup$ Do you mean you want a formula for the nth term? $\endgroup$ Oct 26, 2020 at 19:13
  • 4
    $\begingroup$ This sequence is pretty famous, actually. $\endgroup$ Oct 26, 2020 at 19:14
  • 1
    $\begingroup$ I think this problem is still unsolved $\endgroup$
    – Kandinskij
    Oct 26, 2020 at 19:19
  • 1
    $\begingroup$ The late, great John Conway gave an asymptotic in terms of the unique positive root of a degree 71 polynomial. Have a look. $\endgroup$
    – Integrand
    Oct 27, 2020 at 2:55
  • $\begingroup$ @Integrand That's actually insane. Both Conway and Mathematics never cease to amaze me $\endgroup$
    – Mourad
    Oct 27, 2020 at 2:58

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