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 A134121 #12 Sep 14 2015 15:52:01 %S A134121 15683,36389,37907,76163,92507,108587,109673,124853,138683,138977, %T A134121 140009,140477,183203,186959,203669,225383,226697,229037,232259, %U A134121 242819,242927,244043,245339,271289,273653,275837,279353,280139,282617,285377 %N A134121 Primes p such that q-p = 44, where q is the next prime after p. %H A134121 Charles R Greathouse IV, <a href="/A134121/b134121.txt">Table of n, a(n) for n = 1..10000</a> %H A134121 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a> %o A134121 (PARI) is(n)=nextprime(n+1)==n+44 && isprime(n) \\ _Charles R Greathouse IV_, Sep 14 2015 %Y A134121 Cf. A134120, A134122. %K A134121 nonn %O A134121 1,1 %A A134121 _Rick L. Shepherd_, Oct 08 2007