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%I #24 Sep 08 2022 08:45:18
%S 2,4,6,10,12,16,18,22,24,34,36,40,46,48,54,58,60,64,72,76,78,88,90,94,
%T 102,106,114,120,124,130,132,136,138,148,150,156,166,172,174,178,192,
%U 198,204,208,214,220,222,226,232,234,240,244,246,258,262,276,286,288
%N Numbers k such that 5k - 7 is prime.
%C 5 and 7 are twin primes.
%H Daniel Starodubtsev, <a href="/A107304/b107304.txt">Table of n, a(n) for n = 1..10000</a>
%e If k=2, then 5*k - 7 = 3 (prime).
%e If k=34, then 5*k - 7 = 163 (prime).
%t Select[Range[2,300],PrimeQ[5#-7]&] (* _Harvey P. Dale_, May 22 2013 *)
%o (Magma) [n: n in [2..300]| IsPrime(5*n-7)]; // _Vincenzo Librandi_, Nov 13 2010
%o (PARI) is(n)=isprime(5*n-7) \\ _Charles R Greathouse IV_, Dec 27 2013
%o (PARI) [n\5+2 | n<-primes(10^3), n%5==3] \\ _Charles R Greathouse IV_, Dec 27 2013
%Y Cf. A030431.
%K nonn
%O 1,1
%A _Parthasarathy Nambi_, May 20 2005
%E More terms from _Kyle D. Balliet_, Feb 28 2009
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