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 A073648 #18 Feb 04 2024 01:14:22
%S A073648 7,13,19,43,103,109,193,229,313,349,463,643,823,859,883,1093,1279,
%T A073648 1303,1429,1483,1489,1609,1873,1999,2083,2239,2269,2659,2689,3253,
%U A073648 3463,3529,3673,3919,4003,4129,4519,4639,4789,4933,4969,5233,5479,5503,5653,6199
%N A073648 Middle members of prime triples {p, p+2, p+6}.
%H A073648 Zak Seidov, <a href="/A073648/b073648.txt">Table of n,a(n) for n=1,2380, a(n)<2*10^6</a>
%F A073648 a(n) = A022004(n) + 2.
%t A073648 Transpose[Select[Partition[Prime[Range[850]],3,1],Differences[#]=={2,4}&]][[2]] (* _Harvey P. Dale_, Feb 20 2011 *)
%Y A073648 Cf. A073649, A073650.
%Y A073648 Cf. A098412, A098414.
%K A073648 base,nonn
%O A073648 1,1
%A A073648 _Amarnath Murthy_, Aug 09 2002
%E A073648 More terms from _Benoit Cloitre_, Aug 13 2002