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%I #2 Mar 30 2012 17:30:36
%S 283,1864,3145,3772,4153,11902,18829,27736,28129,33739,36469,40207,
%T 47533,55996,60871,63184,63244,80839,91174,92683,93379,103672,107236,
%U 117337,117589,136765,143110,146590,161986,183889,189118,206419,207055
%N 100000n+1, 100000n+3, 100000n+7, 100000n+9 are all primes.
%t Select[Range[10^6/4], PrimeQ[10^5# + 1] && PrimeQ[10^5# + 3] && PrimeQ[10^5# + 7] && PrimeQ[10^5# + 9] &]
%Y Cf. A007811 and A064687.
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Oct 29 2001
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