|
%I #9 Jul 11 2021 15:31:25
%S 2,6,14,66,186,378,546,1190,1470,2406,4470,5250,7086,18578,20166,
%T 25806,42602,58590,69006,85566,134946,137346,170586,187838,206646,
%U 262146,272610,285390,289394,420210,500570,538734,592410,595686,602250,618450
%N Numbers k such that 8^k == -1 (mod k-1).
%t Do[If[PowerMod[8, n, n-1]==n-2, Print[n]], {n, 2, 10^7}]
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Jun 09 2000
|
