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A128367
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a(n) = least k such that the remainder when 27^k is divided by k is n.
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17
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2, 5, 6, 23, 11, 7, 25, 19, 10, 17, 718, 165, 35, 533, 33, 3738251, 178, 57, 142, 9779, 60, 2227273193, 55, 19659, 724, 17678421233, 29, 17473, 70, 19653, 209, 3005, 48, 28777, 694, 111, 346, 1441, 46, 15977, 86, 3399, 12614, 4387, 116, 527
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| 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
| t = Table[0, {10000} ]; k = 1; While[ k < 4500000000, a = PowerMod[27, k, k]; If[a < 10001 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ ]; t [From Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 06 2009]
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CROSSREFS
| Cf. A128361, A128362, A128363, A128364, A128365, A128366, A128368, 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: A184594 A014454 A136324 * A178924 A137067 A008555
Adjacent sequences: A128364 A128365 A128366 * A128368 A128369 A128370
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KEYWORD
| hard,nonn
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AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Feb 27 2007
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EXTENSIONS
| a(16) - a(25) from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 06 2009
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