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 A050654 #7 Oct 14 2019 23:58:00 %S A050654 2,3,5,7,40,42,44,45,46,48,70,72,74,75,76,78,130,132,134,135,136,138, %T A050654 220,222,224,225,226,228,310,312,314,315,316,318,430,432,434,435,436, %U A050654 438,460,462,464,465,466,468,610,612,614,615,616,618,640,642,644,645 %N A050654 Numbers n such that number of primes produced according to rules stipulated in Honaker's A048853 is 3. %e A050654 Altering a(17)=130 gives 3 primes: 131, 137 and 139. %Y A050654 Cf. A048853, A050662, A050665. %K A050654 nonn,base %O A050654 1,1 %A A050654 _Patrick De Geest_, Jul 15 1999