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%I #11 Dec 29 2019 08:39:52
%S 3,7,11,17,59,67,71,113,137,157,181,199,269,283,293,379,571,613,617,
%T 641,809,829,857,881,907,1033,1093,1259,1427,1453,1459,1471,1733,1777,
%U 1847,1931,1933,2017,2083,2087,2239,2281,2383,2549,2593,2659,2677,2689,2731
%N Primes p such that 60*p - 1 and 60*p + 1 are twin primes.
%H Amiram Eldar, <a href="/A138659/b138659.txt">Table of n, a(n) for n = 1..10000</a>
%e 3 is a term since it is a prime and 60*3 - 1 = 179 and 60*3 + 1 = 181 are twin primes.
%e 7 is a term since it is a prime and 60*7 - 1 = 419 and 60*7 + 1 = 421 are twin primes.
%p a:=proc(n) if isprime(60*ithprime(n)-1) = true and isprime(60*ithprime(n)+1) = true then ithprime(n) else end if end proc: seq(a(n),n=1..400); # _Emeric Deutsch_, May 19 2008
%t a=60;Select[Prime[Range[10^3]],PrimeQ[a*#-1]&&PrimeQ[a*#+1]&]
%Y Cf. A001097, A001359, A006512.
%Y Cf. A138656, A138657, A138658.
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, May 15 2008
%E More terms from _Emeric Deutsch_, May 19 2008