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A127106
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Numbers n such that n^2 divides 6^n-1.
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39
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OFFSET
| 1,2
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COMMENTS
| Subsequence of A014946.
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MATHEMATICA
| Select[Range[20000], IntegerQ[(PowerMod[6, #, #^2 ]-1)/#^2 ]&]
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CROSSREFS
| Cf. A127100, A127101, A127102, A127103, A127104, A127105, A127107, A127092, A014946.
Sequence in context: A165628 A119747 A177906 * A165877 A123658 A057199
Adjacent sequences: A127103 A127104 A127105 * A127107 A127108 A127109
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KEYWORD
| hard,more,nonn
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AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Jan 05 2007
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EXTENSIONS
| Two more terms from Max Alekseyev (maxale(AT)gmail.com), May 05 2010
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