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A102139 Iccanobirt prime indices (9 of 15): Indices of prime numbers in A102119. 1

%I #12 Apr 10 2020 15:56:30

%S 4,6,7,11,15,19,233,549,1608,4143,4633,9642

%N Iccanobirt prime indices (9 of 15): Indices of prime numbers in A102119.

%C No more terms through 5000.

%C a(13) > 50000. - _Robert Price_, Nov 09 2018

%F A102119(a(n)) = A102159(n).

%t a[n_] := a[n] =

%t IntegerReverse[(a[n - 1] + a[n - 2] + IntegerReverse[a[n - 3]])];

%t a[0] = 0; a[1] = 0; a[2] = 1;

%t Select[Range[0, 5000], PrimeQ[a[#]] &] (* _Robert Price_, Apr 10 2020 *)

%Y Cf. A000040, A102119, A102131-A102145.

%K nonn,more,base

%O 1,1

%A _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004

%E a(12) from _Robert Price_, Nov 09 2018

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Last modified May 16 14:11 EDT 2024. Contains 372552 sequences. (Running on oeis4.)