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A128368
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a(n) = least k such that the remainder when 28^k is divided by k is n.
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17
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3, 13, 5, 6, 23, 11, 15, 194, 19, 18, 17, 148, 213, 22, 131209, 20, 2335, 25, 7311, 44, 259, 51, 5263, 38, 21927, 758, 240055, 29, 803, 58, 21921, 55, 4405, 39, 413, 316, 549, 746, 17831, 62, 4367, 106, 165, 74, 19253, 82, 6455, 88, 147, 734, 62093, 122
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..52.
Robert G. Wilson v, Table of n, a(n) for n = 1..10000 with -1 for large entries where a(n) has not yet been found
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MATHEMATICA
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t = Table[0, {10000} ]; k = 1; While[ k < 5000000000, a = PowerMod[28, k, k]; If[a < 10001 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ ]; t [From Robert G. Wilson v, Aug 06 2009]
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CROSSREFS
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Cf. A128361, A128362, A128363, A128364, A128365, A128366, A128367, A128369, A129370, A128371, A128372. Cf. A036236, A078457, A119678, A119679, A127816, A119715, A119714, A127817, A127818, A127819, A127820, A127821, A128154, A128155, A128156, A128157, A128158, A128159, A128160. Cf. A128149, A128150, A128172.
Sequence in context: A107774 A122478 A164558 * A050089 A125571 A187023
Adjacent sequences: A128365 A128366 A128367 * A128369 A128370 A128371
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KEYWORD
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hard,nonn
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AUTHOR
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Alexander Adamchuk, Feb 27 2007
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STATUS
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approved
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