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A128681
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Numbers n such that n^3 divides 8^(n^2)+1.
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19
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1, 3, 9, 57, 171, 1467, 13131, 27873, 32547, 97641, 249489, 261633, 784899, 1218897, 1255347, 2140353, 4971027, 8246019, 9961491, 12914001, 14913081, 15915483, 23159043, 23851593, 24738057, 29884473, 40666707, 83512353, 127938537
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| 3 divides a(n) for n>1.
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CROSSREFS
| 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, A128680, A128682, A128683, A128684, A128685.
Sequence in context: A175117 A183303 A075979 * A040175 A192252 A105466
Adjacent sequences: A128678 A128679 A128680 * A128682 A128683 A128684
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KEYWORD
| hard,nonn
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AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Mar 31 2007
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EXTENSIONS
| More terms from Ryan Propper (rpropper(AT)cs.stanford.edu), Jan 13 2008
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