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%I #12 Sep 23 2019 15:37:45
%S 3,15,495,624,1308,1365,1494,1659,1848,6363,8064,12780,13908,14013,
%T 16530,18018,18654,28575,30885,31020,38130,43674,48735,50379,57198,
%U 60915,61059,62943,75768,76359,76569,80949,81075,83028,84045,86085,88185,104664,105588
%N Numbers n such that n*(n+1)-1 and n*(n+1)+1 are twin primes and n*(n+3)-1 and n*(n+3)+1 are also twin primes.
%H David A. Corneth, <a href="/A138303/b138303.txt">Table of n, a(n) for n = 1..10000</a> (first 500 terms from Pierre CAMI)
%e 3*4=12: 11 and 13 are twin primes; 3*6=18 and 17 and 19 are also twin primes.
%o (PARI) isok(n) = isprime(n*(n+1)-1) && isprime(n*(n+1)+1) && isprime(n*(n+3)-1) && isprime(n*(n+3)+1); \\ _Michel Marcus_, Sep 23 2019
%Y Subsequence of A088485.
%K nonn
%O 1,1
%A _Pierre CAMI_, Mar 13 2008
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