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Search: id:A128171
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| A128171 |
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Numbers n such that n divides 1 + Sum[ Prime[k]^7, {k,1,n} ]. |
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+0
7
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| 1, 2, 4, 5, 6, 10, 12, 46, 1830, 2086, 6000, 7681, 8242, 15204, 43698, 52054, 154490, 211052, 392767, 4309540, 6452151, 8773101
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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s = 1; Do[s = s + Prime[n]^7; If[ Mod[s, n] == 0, Print[n]], {n, 1000000}]
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CROSSREFS
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Cf. A000041, A125826, A128165, A128166, A128167, A128168, A128169, A128170.
Sequence in context: A128167 A162534 A127092 this_sequence A039036 A043045 A091678
Adjacent sequences: A128168 A128169 A128170 this_sequence A128172 A128173 A128174
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KEYWORD
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hard,more,nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Feb 22 2007, Feb 23 2007
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