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A053930
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Numbers k such that k^2 contains only digits {2,6,9}.
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1
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3, 173, 264, 964, 3114, 31563, 163187, 264437, 16431563, 96032404423, 99647694036, 9813067816077, 51665201022187, 51960847753114, 7935361806302386, 78883604126137785577, 47567102808870567435673, 26395073915340646948470264
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OFFSET
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1,1
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LINKS
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PROG
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(PARI) isok(n) = {digs = digits(n^2); for (i = 1, #digs, if ((digs[i] != 2) && (digs[i] != 6) && (digs[i] != 9), return (0)); ); return (1); } \\ Michel Marcus, Sep 02 2013
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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More terms from Joe K. Crump (joecr(AT)carolina.rr.com), Sep 07 2000
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STATUS
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approved
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