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A129295
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Numbers m such that m^3-1 has no divisors d with 1<d<m-1.
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4
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3, 4, 6, 8, 12, 14, 20, 24, 38, 54, 62, 80, 90, 110, 138, 150, 164, 168, 192, 194, 272, 278, 314, 332, 348, 398, 402, 434, 500, 572, 642, 644, 720, 728, 762, 798, 812, 860, 864, 878, 920, 992, 1020, 1022, 1070, 1092, 1098, 1118, 1130, 1182, 1202, 1230, 1260, 1308
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OFFSET
| 1,1
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COMMENTS
| A129294(a(n)) = #{1, a(n)-1} = 2.
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EXAMPLE
| {1,11,157,1727} is the set of divisors of 12^3-1, therefore 12 is a term, A129294(12) = #{1,11} = 2.
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CROSSREFS
| Cf. A129293, A129295.
Sequence in context: A037346 A203444 A008864 * A192276 A049305 A147606
Adjacent sequences: A129292 A129293 A129294 * A129296 A129297 A129298
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 09 2007
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