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 A226727 #20 Jul 05 2013 04:25:30 %S A226727 30,43,45,60,61,73,75,90,97,120,137,151,160,169,173,180,197,240,241, %T A226727 257,259,311,320,331,347,360,367,389,400,421,480,491,499,569,571,601, %U A226727 617,640,641,647,709,720,773,800,809,857,881,919,929,947,960,971 %N A226727 Places n where A225867(n)=5. %C A226727 The proportion of prime terms has a tendency to increase. For example, 4 from the first 10 terms; 10 from the first 20 terms; 16 from the first 30 terms; 24 from the first 40 terms; 40 from the first 60 terms, 88 from the first 110 terms. We conjecture that this proportion asymptotically tends to 1. %Y A226727 Cf. A225867, A225868, A226977, A227010. %K A226727 nonn %O A226727 1,1 %A A226727 _Vladimir Shevelev_, Jun 29 2013