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Search: id:A015891
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| A015891 |
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Numbers n such that n | 5^n + 5. |
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+0
2
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| 1, 2, 5, 6, 10, 30, 70, 1565, 2806, 3126, 51670, 58290, 214405, 285286, 378258, 1854766, 2170486, 2222122, 2247610, 3463230, 4147522, 5942526, 9381126, 14818486, 15743890, 20162858, 34087054, 34838686, 38742166, 71067430
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OFFSET
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1,2
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MATHEMATICA
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Select[Range[1000000], IntegerQ[(PowerMod[5, #, # ]+5)/# ]&] (Adamchuk)
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CROSSREFS
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Cf. A067946 = numbers n such that n divides 5^n-1. Cf. A015951 = numbers n such that n | 5^n + 1.
Adjacent sequences: A015888 A015889 A015890 this_sequence A015892 A015893 A015894
Sequence in context: A056643 A057256 A073825 this_sequence A026344 A057812 A140144
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com)
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EXTENSIONS
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Corrected by Alexander Adamchuk (alex(AT)kolmogorov.com), Nov 04 2006
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