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%I #21 Sep 08 2022 08:46:16
%S 1,3,9,27,81,112,74,91,11,33,99,35,105,53,28,84,121,101,41,123,107,59,
%T 46,7,21,63,58,43,129,125,113,77,100,38,114,80,109,65,64,61,52,25,75,
%U 94,20,60,49,16,48,13,39,117,89,5,15,45,4,12,36,108,62,55,34,102,44,1
%N a(n) = 3^n mod 131.
%H Vincenzo Librandi, <a href="/A271351/b271351.txt">Table of n, a(n) for n = 0..1000</a>
%F a(n) = a(n-65).
%t PowerMod[3, Range[0, 100], 131]
%o (Magma) [Modexp(3, n, 131): n in [0..100]];
%o (PARI) a(n) = lift(Mod(3, 131)^n); \\ _Altug Alkan_, Apr 05 2016
%Y Cf. similar sequences listed in A271350.
%K nonn,easy
%O 0,2
%A _Vincenzo Librandi_, Apr 05 2016