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a(n) = 2^n mod 149.
3

%I #12 Jan 27 2019 10:57:46

%S 1,2,4,8,16,32,64,128,107,65,130,111,73,146,143,137,125,101,53,106,63,

%T 126,103,57,114,79,9,18,36,72,144,139,129,109,69,138,127,105,61,122,

%U 95,41,82,15,30,60,120,91,33

%N a(n) = 2^n mod 149.

%D I. M. Vinogradov, Elements of Number Theory, pp. 220 ff.

%H Muniru A Asiru, <a href="/A036147/b036147.txt">Table of n, a(n) for n = 0..1000</a>

%F a(n) = a(n-148). - _Muniru A Asiru_, Jan 27 2019

%p [ seq(primroot(ithprime(i))^j mod ithprime(i),j=0..100) ];

%o (PARI) a(n)=lift(Mod(2,149)^n) \\ _Charles R Greathouse IV_, Mar 22 2016

%o (GAP) a:=List([0..70],n->PowerMod(2,n,149));; Print(a); # _Muniru A Asiru_, Jan 27 2019

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_.