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 A072743 #18 Jan 22 2022 08:42:55
%S A072743 5,11,19,47,41,67,173,167,149,373,349,331,313,283,271,761,743,677,641,
%T A072743 593,563,557,521,1471,1447,1429,1321,1297,1291,1279,1237,1171,1129,
%U A072743 1051,1039,2999,2909,2903,2879,2837,2819,2789,2777,2729,2687,2663,2657
%N A072743 Greater members of a pair of primes (p, q) such that, for some integer k, (p+q)/2 = 2^k and p > 2^(k-1).
%C A072743 For each term q=a(n), the corresponding lesser member is p=A072742(n). (Terms in this sequence are not listed in ascending order; rather, the corresponding primes p in A072742 are listed in ascending order.)
%o A072743 (PARI) listkq(k) = {my(list = List()); forprime(p=2^(k-1)+1, 2^k, my(q=2^(k+1)-p); if ((q>p) && isprime(q), listput(list, q)); ); Vec(list);}
%o A072743 upto(k) = {my(list = List()); for (i=1, k, my(klist = listkq(i)); if (#klist, for (j=1, #klist, listput(list, klist[j])));); Vec(list);}
%o A072743 upto(11) \\ _Michel Marcus_, Jan 22 2022
%Y A072743 Cf. A072742 (corresponding lesser members), A072746, A072744, A072745.
%K A072743 nonn
%O A072743 1,1
%A A072743 _Reinhard Zumkeller_, Jul 08 2002
%E A072743 Name corrected by _Jon E. Schoenfield_, Jun 30 2021