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%I #15 Sep 13 2017 22:54:00
%S 1,5,2352527,193841707,17126009179703,380211619942943
%N Positive integers n such that 3^n == 8 (mod n).
%C No other terms below 10^15. - _Max Alekseyev_, Sep 13 2017
%o (PARI) isok(n) = Mod(3, n)^n == Mod(8, n);
%Y Solutions to 3^n == k (mod n): A277340 (k=-11), A277289 (k=-7), A277288 (k=-5), A015973 (k=-2), A015949 (k=-1), A067945 (k=1), A276671 (k=2), A276740 (k=5), A277628 (k=6), A277126 (k=7), this sequence (k=8), A277274 (k=11).
%K nonn,more
%O 1,2
%A _Dmitry Ezhov_, Oct 24 2016
%E a(5)-a(6) established by _Max Alekseyev_, Sep 13 2017
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