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 A050656 #6 Oct 14 2019 23:57:26 %S A050656 29,31,37,59,61,67,89,269,321,331,443,487,503,521,569,571,589,599,629, %T A050656 733,751,761,773,811,903,919,983,1139,1141,1291,1303,1319,1511,1567, %U A050656 1641,1777,1847,2071,2179,2473,2579,2633,2671,2707,2773,2921,2927,2981 %N A050656 Numbers n such that number of primes produced according to rules stipulated in Honaker's A048853 is 5. %e A050656 Altering a(9)=321 gives 5 primes: 421, 521, 821, 311 and 331. %Y A050656 Cf. A048853, A050662, A050667. %K A050656 nonn,base %O A050656 1,1 %A A050656 _Patrick De Geest_, Jul 15 1999