A102139 Iccanobirt prime indices (9 of 15): Indices of prime numbers in A102119.
4, 6, 7, 11, 15, 19, 233, 549, 1608, 4143, 4633, 9642
Offset: 1
Programs
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Mathematica
a[n_] := a[n] = IntegerReverse[(a[n - 1] + a[n - 2] + IntegerReverse[a[n - 3]])]; a[0] = 0; a[1] = 0; a[2] = 1; Select[Range[0, 5000], PrimeQ[a[#]] &] (* Robert Price, Apr 10 2020 *)
Extensions
a(12) from Robert Price, Nov 09 2018
Comments