This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A188132 #14 Nov 13 2019 10:15:22 %S A188132 3,7,11,23,47,83,103,107,131,151,263,271,283,311,331,347,367,443,467, %T A188132 503,607,683,727,751,787,863,887,907,947,971,1063,1091,1103,1151,1171, %U A188132 1283,1327,1423,1427,1451,1487,1511,1531,1567,1607,1787,1811,1823,1831,1847,1907,1931,1987 %N A188132 Primes p such that p == 3 (mod 4) and 6p+1 is prime. %C A188132 Complement of A188131 in A007693 \ {2}. %H A188132 Amiram Eldar, <a href="/A188132/b188132.txt">Table of n, a(n) for n = 1..10000</a> %t A188132 Select[Range[3, 2000, 4], PrimeQ[#] && PrimeQ[6# + 1] &] (* _Amiram Eldar_, Nov 13 2019 *) %o A188132 (PARI) forprime( p=1,1e4, p%4==3 & isprime(p*6+1) & print1(p", ")) %Y A188132 Cf. A002515, A007693, A188131. %K A188132 nonn %O A188132 1,1 %A A188132 _M. F. Hasler_, Mar 21 2011