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%I #7 Mar 30 2012 18:52:13
%S 7,19,109,631,811,919,991,1009,1801,2179,3511,3709,3889,4591,4969,
%T 6661,6841,7669,9109,9181,9199,12781,13339,14401,14851,15679,16741,
%U 17551,18451,19081,20071,20521,20899,22861,23041,23059,23599,24049,24499
%N Prime numbers 3*n-2 such that n, 2*n-1 and 3*n-2 are prime.
%e 3.5.7, 7.13.19, 37.73.109, 211.421.631, 271.541.811 = A174734.A137702.A180025
%t Select[Prime[Range[1000]], PrimeQ[2*#-1] && PrimeQ[3*#-2]&]*3-2
%Y Cf. A137702, A174734
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, Jan 13 2011
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