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Search: id:A125304
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| A125304 |
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a(n) is the smallest number such that its n power has all its digits twice. |
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+0
1
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OFFSET
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1,1
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COMMENT
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There may be no further terms.
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EXAMPLE
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11^1 = 11, 88^2 = 7744, 11^3 = 1331, 207^4 = 1836036801, 2955^5 = 225313610074846875
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MATHEMATICA
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g[n_] := Block[{k = 2}, While[ Union[ Length@ # & /@ Split@ Sort@ IntegerDigits[k^n]] != {2}, k++ ]; k]; Do[ Print@ g@ n, {n, 5}] (* Robert G. Wilson v (rgwv@rgwv.com), Aug 31 2007 *)
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CROSSREFS
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Sequence in context: A081013 A119383 A001278 this_sequence A022735 A037601 A037706
Adjacent sequences: A125301 A125302 A125303 this_sequence A125305 A125306 A125307
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KEYWORD
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base,fini,nonn
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AUTHOR
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Tanya Khovanova (tanyakh(AT)yahoo.com), Dec 09 2006
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