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Search: id:A128680
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| A128680 |
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Numbers n such that n^3 divides 6^(n^2)+1. |
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12
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| 1, 7, 203, 1379, 11977, 39991, 577129, 2359469, 4780447, 6521291, 6640739, 9904979, 21511301, 28434413, 34050611, 113694413, 189117439, 222281549, 250163599, 282046373, 391803601, 941748059, 1269166759, 1308225583
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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7 divides a(n) for n>1.
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CROSSREFS
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Cf. A127263 = numbers n such that n^3 divide 2^(n^2)+1. Cf. A128677 = Least k>p such that (kp)^3 divides (p-1)^(kp)^2+1, where p = Prime[n]>2. Cf. A128678, A128679, A128681, A128682, A128683, A128684, A128685.
Adjacent sequences: A128677 A128678 A128679 this_sequence A128681 A128682 A128683
Sequence in context: A068233 A057204 A124988 this_sequence A065819 A061028 A045760
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KEYWORD
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hard,nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Mar 31 2007
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)cs.stanford.edu), Jan 13 2008
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