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%I #9 Mar 23 2020 04:05:12
%S 9,39,165,219,249,309,414,534,639,765,1044,1065,1089,1155,1395,1509,
%T 1530,1554,1590,1884,2079,2115,2130,2310,2319,2430,2475,2709,2874,
%U 3060,3105,3354,3420,3684,3705,3780,3819,4104,4314,4554,4599,4659,4869,5160
%N Numbers k such that 2*k+1, 4*k+1 and 8*k+1 are primes.
%H Amiram Eldar, <a href="/A124041/b124041.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[3*Range[2000], And @@ PrimeQ /@ ({2, 4, 8}*# + 1) &] (* _Ray Chandler_, Dec 06 2006 *)
%Y Cf. A005097, A123998, A124412-A124417.
%K nonn
%O 1,1
%A _Artur Jasinski_, Nov 02 2006
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