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 A050672 #5 Oct 14 2019 23:53:48 %S A050672 101,139,191,409,857,977,1009,1013,1019,1031,1049,1069,1091,1231,1409, %T A050672 1429,1451,1481,1487,1493,1523,1667,1733,1753,1787,1789,1831,1877, %U A050672 1879,1931,1933,1999,2069,2111,2243,2287,2293,2351,2381,2417,2447,2477,2539 %N A050672 Primes p such that number of primes produced according to rules stipulated in Honaker's A048853 is 10. %e A050672 Altering a(1)=101 gives 10 primes: 401, 601, 701, 131, 151, 181, 191, 103, 107 and 109. %Y A050672 Cf. A048853, A050673, A050661. %K A050672 nonn,base %O A050672 1,1 %A A050672 _Patrick De Geest_, Jul 15 1999