%I A128154
%S A128154 13,3,11,5,33,10,1967,9,23587,18,2733,46,17651,15,93929,20,303,178,145,
%T A128154 22,12901,58,2721,25,17990951,27,143,36,85,166,646123,82,2439143677,55,
%U A128154 63,76,319,123,295,52,51,77,247380287953,45,5779134947,90,87,74,175,146
%N A128154 a(n) = least k such that the remainder when 14^k is divided by k is n.
%H A128154 Robert G. Wilson v, <a href="a128154.txt">Table of n, a(n) for n = 1..10000 
               with -1 for large entries where a(n) has not yet been found</a>
%t A128154 t = Table[0, {10000} ]; k = 1; While[ k < 3000000000, a = PowerMod[14, 
               k, k]; If[a < 10001 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ 
               ]; t
%Y A128154 Cf. A036236, A078457, A119678, A119679, A127816, A119715, A119714, A127817, 
               A127818, A127819, A127820, A127821, A128155, A128156, A128157, A128158, 
               A128159, A128160, A128149, A128150.
%Y A128154 Sequence in context: A117540 A010221 A113172 this_sequence A107806 A138965 
               A005602
%Y A128154 Adjacent sequences: A128151 A128152 A128153 this_sequence A128155 A128156 
               A128157
%K A128154 hard,nonn
%O A128154 1,1
%A A128154 Alexander Adamchuk (alex(AT)kolmogorov.com), Feb 16 2007
%E A128154 More terms from Ryan Propper (rpropper(AT)stanford.edu), Feb 28 2007
%E A128154 a(43) from Hagen von Eitzen (math(AT)von-eitzen.de), Aug 16 2009