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 A069458 #9 Jan 21 2024 16:40:12
%S A069458 3,5,7,11,13,17,19,101,103,107,109,137,139,149,151,179,181,191,193,
%T A069458 197,199,419,421,431,433,809,811,821,823,827,829,1019,1021,1031,1033,
%U A069458 1049,1051,1061,1063,1481,1483,1487,1489,1871,1873,1877
%N A069458 Twin pack primes.
%e A069458 A twin pack of primes contains 2 or more pairs of twin primes, between which pairs there are no other primes. 137,139,149,151 are in the sequence because they are consecutive primes which belong to more than 1 twin pair. 29,31 are not because both the preceding prime 23 and the next prime 37 are non-twins.
%t A069458 Join[{3},Flatten[Select[Partition[Prime[Range[300]],4,1],#[[2]]-#[[1]] == #[[4]]-#[[3]] == 2&]]// Union] (* _Harvey P. Dale_, Jan 13 2017 *)
%Y A069458 Cf. A001097, A069457.
%K A069458 nonn
%O A069458 1,1
%A A069458 _Neil Fernandez_, Mar 23 2002