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%I #12 Sep 08 2022 08:45:50
%S 2,3,7,19,157,199,229,379,439,577,829,877,967,997,1009,1279,1429,1459,
%T 1657,2137,2539,3067,3169,3187,3319,3739,3769,3967,4159,4357,4447,
%U 4909,4987,6079,6379,6427,6709,6967,7219,7297,7639,8209,9049,9067,9157,9277
%N Primes p such that 2p - 1 and 6p - 1 are prime.
%H Iain Fox, <a href="/A172976/b172976.txt">Table of n, a(n) for n = 1..10000</a>
%o (Magma) [p: p in PrimesUpTo(10000)|IsPrime(2*p-1) and IsPrime(6*p-1)] // _Vincenzo Librandi_, Jan 29 2011
%o (PARI) lista(nn) = forprime(p=2, nn, if(isprime(2*p - 1) && isprime(6*p - 1), print1(p, ", "))) \\ _Iain Fox_, Jan 20 2018
%K nonn,easy,less
%O 1,1
%A _Juri-Stepan Gerasimov_, Feb 06 2010
%E Corrected and extended by _Charles R Greathouse IV_, Mar 25 2010
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