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 A050668 #5 Oct 14 2019 23:54:54 %S A050668 23,41,47,53,71,79,83,113,149,181,229,293,311,349,359,379,421,433,523, %T A050668 541,587,593,617,619,661,701,719,727,769,787,797,881,971,1327,1373, %U A050668 1399,1471,1543,1741,1747,1811,1889,1913,1979,2027,2129,2137,2161,2251 %N A050668 Primes p such that number of primes produced according to rules stipulated in Honaker's A048853 is 6. %e A050668 Altering a(1)=23 gives 6 primes: 13, 43, 53, 73, 83 and 29. %Y A050668 Cf. A048853, A050673, A050657. %K A050668 nonn,base %O A050668 1,1 %A A050668 _Patrick De Geest_, Jul 15 1999