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A059215
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Least number k such that k^n reversed is a prime.
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1
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2, 4, 5, 2, 2, 16, 2, 8, 32, 2, 17, 4, 25, 28, 8, 53, 2, 25, 79, 95, 47, 46, 28, 2, 19, 5, 85, 86, 541, 32, 104, 314, 25, 115, 4, 5, 2, 25, 67, 71, 142, 226, 5, 53, 2, 304, 14, 106, 85, 8
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..50.
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MATHEMATICA
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Do[ k = 2; While[ ! PrimeQ[ ToExpression[ StringReverse[ ToString[ k^n ] ] ] ], k++ ]; Print[ k ], {n, 1, 50} ]
lnk[n_]:=Module[{k=1}, While[!PrimeQ[IntegerReverse[k^n]], k++]; k]; Array[ lnk, 50] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Mar 20 2021 *)
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CROSSREFS
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Sequence in context: A030750 A286147 A340755 * A125142 A234350 A324035
Adjacent sequences: A059212 A059213 A059214 * A059216 A059217 A059218
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KEYWORD
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nonn,base
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AUTHOR
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Robert G. Wilson v, Jan 16 2001
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STATUS
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approved
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