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A102141
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Iccanobirt prime indices (11 of 15): Indices of prime numbers in A102121.
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1
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4, 6, 7, 15, 25, 51, 126, 171, 311, 358, 865, 1850, 3311, 4686, 7893, 8249, 17795, 27176, 48728
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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No more terms through 5000.
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LINKS
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FORMULA
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MATHEMATICA
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a[n_] := a[n] =
IntegerReverse[a[n - 1] + IntegerReverse[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 *)
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CROSSREFS
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KEYWORD
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nonn,more,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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