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1, 2, 4, 6, 8, 12, 16, 18, 24, 32, 36, 42, 48, 52, 54, 64, 72, 84, 96, 104, 108, 126, 128, 144, 156, 162, 168, 186, 192, 208, 216, 252, 256, 272, 288, 294, 312, 324, 336, 342, 372, 378, 384, 416, 432, 468, 486, 504, 512, 544, 558, 576, 588, 624, 648, 672, 676
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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Join[{1}, Select[Range[700], PowerMod[5, #, #]==1&]] (* Harvey P. Dale, Feb 25 2015 *)
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PROG
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(PARI) is(n)=Mod(5, n)^n==1 \\ Charles R Greathouse IV, Nov 04 2016
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CROSSREFS
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Cf. A024049.
Sequence in context: A324842 A055932 A140067 * A227270 A145853 A318782
Adjacent sequences: A067943 A067944 A067945 * A067947 A067948 A067949
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre, Mar 05 2002
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STATUS
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approved
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