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%I #10 Dec 29 2019 08:39:39
%S 11,31,41,101,131,211,239,331,419,421,509,619,691,751,769,1091,1129,
%T 1279,1531,1571,1609,1901,2111,2221,2251,2281,2341,2699,2719,2879,
%U 2971,3221,3541,3671,3821,3851,4271,4349,4421,4519,4561,4651,4861,4909,4969
%N Primes p such that 42*p - 1 and 42*p + 1 are twin primes.
%H Amiram Eldar, <a href="/A138656/b138656.txt">Table of n, a(n) for n = 1..10000</a>
%e 11 is a term since it is a prime and 42*11 - 1 = 461 and 42*11 + 1 = 463 are twin primes.
%e 31 is a term since it is a prime and 42*31 - 1 = 1301 and 42*31 + 1 = 1303 are twin primes.
%t a=42;Select[Prime[Range[10^3]],PrimeQ[a*#-1]&&PrimeQ[a*#+1]&]
%Y Cf. A001097, A001359, A006512.
%Y Cf. A138657, A138658, A138659.
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, May 15 2008
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