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 A285223 #8 Nov 19 2017 17:22:43 %S A285223 2,3,8,15,18,34,106,169,404,411,421,501,504,558,586,616,822,1051,1573, %T A285223 1791,1894,1935,2178,2536,2823,2908,5002,5037,5383,5826,6418,8778, %U A285223 8968,9816,9928,11512,12011,12052,12524,13117,13268,13640,15614,16657,17938,19869 %N A285223 Indices of primes in A026007. %H A285223 Vaclav Kotesovec, <a href="/A285223/b285223.txt">Table of n, a(n) for n = 1..109</a> %e A285223 8 is in the sequence because A026007(8) = 83 is prime. %Y A285223 Cf. A026007, A035359. %K A285223 nonn %O A285223 1,1 %A A285223 _Vaclav Kotesovec_, Apr 14 2017