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A243093 Least number k > n such that n concatenated with k is a perfect power. 1
6, 5, 6, 9, 12, 25, 29, 41, 61, 24, 56, 25, 31, 44, 21, 81, 28, 49, 36, 25, 87, 201, 104, 336, 281, 244, 44, 224, 241, 276, 36, 49, 64, 81, 344, 100, 249, 44, 69, 96, 209, 436, 56, 89, 369, 225, 61, 400, 284, 176, 84, 441, 361, 76, 225, 169, 76, 564, 319, 84, 504, 500, 504, 516, 536, 564 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

pp[n_]:=Module[{k=n+1}, While[GCD@@FactorInteger[n*10^IntegerLength[ k]+ k][[All, 2]]<2, k++]; k]; Array[pp, 70] (* Harvey P. Dale, Oct 09 2016 *)

PROG

(PARI)

a(n)=s=Str(n); k=n+1; while(!ispower(eval(concat(s, Str(k)))), k++); return(k)

vector(100, n, a(n))

CROSSREFS

Sequence in context: A133616 A019621 A126689 * A101634 A071176 A243091

Adjacent sequences:  A243090 A243091 A243092 * A243094 A243095 A243096

KEYWORD

nonn,base

AUTHOR

Derek Orr, Aug 18 2014

STATUS

approved

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Last modified June 19 05:33 EDT 2019. Contains 324218 sequences. (Running on oeis4.)