12
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Using one simple rule, an Infinite Sequence has been developed.

First 30 terms are given. Can you continue the sequence for at least next Ten Terms?

Series continues from top left to bottom right.

$3, 31, 41, 59, 53, 89, 97, 79, 23, 43,$

$83, 79, 2, 41, 19, 97, 71, 37, 5, 97$

$59, 23, 7, 89, 3, 53, 11, 17 ,67, 79$

$\text{Next 10}$?

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  • 5
    $\begingroup$ please change it to 30 terms $\endgroup$ – Ak19 May 26 at 11:37
  • $\begingroup$ Happy to see something different, this is a good start. $\endgroup$ – greenturtle3141 May 26 at 13:01
  • 3
    $\begingroup$ Can you confirm that 51 is really correct and not a typo for, say, 53 or 61? $\endgroup$ – Gareth McCaughan May 26 at 13:22
  • $\begingroup$ Can you confirm if infinite sequence means an infinite sequence that does not repeat? $\endgroup$ – tom May 26 at 14:05
  • $\begingroup$ @tom..if you mean, cyclic..it is not..Sequence is not finite..of course numbers can repeat as you can see in the numbers given. $\endgroup$ – Uvc May 26 at 14:23
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The next terms are:

13, 23, 47, 5, 23, 31, 17, 53, 59, 11

Because

These are the primes found in pairs of digits of $\pi$.

31415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679
|| | |   |  |||  |      |  |  |  |   ||||      |   |    |     | | |            |      |    |   ||  ||
3|41 |  53 89|| 23     43  | 79 02  41|71     37  05   97    59 |07           89     03   53  11| 67|
31  59      97|           83         19|                       23                              17  79
             79                       97

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  • $\begingroup$ @florian..excellent!! $\endgroup$ – Uvc May 26 at 15:35
  • $\begingroup$ Thanks! It's the 3 numbers 31,41,59 that gave it away. After that it was a piece of pie. $\endgroup$ – Florian F May 26 at 15:39
  • $\begingroup$ I could have made it tougher ...but I want to make it only slightly complex and a series not to be found in oeis...opens up for so many avenues of further research into this fascinating field $\endgroup$ – Uvc May 26 at 15:44
  • $\begingroup$ It would be nice to examine the prime gaps and frequency of various primes generated via this method through computer calculations. $\endgroup$ – Uvc May 27 at 1:10
  • $\begingroup$ The digits of pi being practically random, the frequency of each prime should be constant at 1 occurrence everu 100 digits. $\endgroup$ – Florian F May 27 at 12:44

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