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 A275248 #14 Jul 24 2016 10:08:48
%S A275248 10,21,187,247,713,1073,1927,2279,3953,4331,6059,7031,9991,10807,
%T A275248 13843,14803,20413,20989,26219,28199,34189,34933,41567,44377,52891,
%U A275248 54731,61937,66013,74513,76151,86881,91123,103603,106829,122491,125291,139093,142859,155989
%N A275248 Sequence of pairwise relatively prime numbers of class P_4 (see comment in A275246).
%t A275248 k = 4; t = Union[{2 (k + 1)}, Select[# NextPrime[#, 2] &@ Prime@ Range@ 120, # > 2 (k + 1) &]]; Last@ Select[#, ListQ@ # &] &@ Table[If[Length@ t < n, 0, t = DeleteCases[t, k_ /; MemberQ[Select[Drop[t, n], ! CoprimeQ[#, t[[n]]] &], k]]], {n, Length@ t}] (* _Michael De Vlieger_, Jul 21 2016 *)
%Y A275248 Cf. A000040, A001248, A089581, A275246, A275249, A275251, A275252, A275253.
%K A275248 nonn
%O A275248 1,1
%A A275248 _Vladimir Shevelev_ and _Peter J. C. Moses_, Jul 21 2016