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%I #15 Sep 09 2019 11:58:04
%S 8,10,19,26,28,35,44,46,55,62,64,71,80,82,91,98,100,107,116,118,127,
%T 134,136,143,152,154,163,170,172,179,188,190,199,206,208,215,224,226,
%U 235,242,244,251,260,262,271,278,280,287,296,298,307,314,316,323,332,334
%N Bases n such that the smallest prime-power-pseudoprime to base n is 9.
%C Values of x such that A090096(x) = 9.
%H Amiram Eldar, <a href="/A090097/b090097.txt">Table of n, a(n) for n = 1..10000</a>
%t pspQ[n_,b_] := CompositeQ[n] && PowerMod[b, n - 1,n ] == 1 ; aQ[n_]:=pspQ[9, n] && AllTrue[{4,8}, !pspQ[#, n] &]; Select[Range[1000], aQ] (* _Amiram Eldar_, Sep 09 2019 *)
%Y Cf. A007535, A090086, A090096.
%K nonn
%O 1,1
%A _Labos Elemer_, Dec 01 2003
%E More terms from _Amiram Eldar_, Sep 09 2019
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