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 A127820 a(n) = least k such that the remainder when 12^k is divided by k is n. 38
 11, 5, 15, 10, 7, 21, 25, 34, 549, 134, 120593747, 13, 20395, 26, 1713, 20, 203, 57, 49, 62, 1707, 122, 55, 30, 793, 118, 45, 58, 1921, 38, 1853, 56, 339, 110, 4223, 42, 85, 106, 1689, 52, 841, 642, 4475, 70, 51, 551, 11683, 147, 168061, 94, 129, 623, 1243895, 90 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MATHEMATICA t = Table[0, {10000} ]; k = 1; While[ k < 3000000000, a = PowerMod[12, k, k]; If[a < 10001 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ ]; t - Robert G. Wilson v, Aug 04 2009 CROSSREFS Cf. A036236, A078457, A119678, A119679, A127816, A119715, A119714, A127817, A127818, A127819, A127821. Sequence in context: A229192 A303978 A085716 * A168206 A120831 A253254 Adjacent sequences:  A127817 A127818 A127819 * A127821 A127822 A127823 KEYWORD nonn AUTHOR Alexander Adamchuk, Jan 30 2007 EXTENSIONS More terms from Robert G. Wilson v, Feb 06 2007 STATUS approved

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Last modified September 18 21:51 EDT 2021. Contains 347536 sequences. (Running on oeis4.)