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 A204666 #14 Sep 08 2022 08:46:01 %S A204666 35617,40289,40639,86869,100853,106033,107509,114493,117443,118973, %T A204666 121789,126859,130873,132763,153763,159233,166487,171947,202129, %U A204666 213659,223849,227893,236813,250199,255259,261169,277429,282167,282713,286873,295459,298099,305663,306589,311897,318023,320953,327347,350293 %N A204666 Primes p such that q-p = 54, where q is the next prime after p. %H A204666 Charles R Greathouse IV, <a href="/A204666/b204666.txt">Table of n, a(n) for n = 1..10000</a> %H A204666 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a> %t A204666 Transpose[Select[Partition[Prime[Range[40000]], 2, 1], Last[#] - First[#] == 54 &]][[1]] (* _Vincenzo Librandi_, Jan 16 2017 *) %o A204666 (Magma) [p: p in PrimesUpTo(400000) | NextPrime(p)-p eq 54]; // _Vincenzo Librandi_, Jan 16 2017 %K A204666 nonn %O A204666 1,1 %A A204666 _N. J. A. Sloane_, Jan 17 2012