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 A285224 #8 Nov 19 2017 17:23:10 %S A285224 3,4,5,7,11,28,45,47,71,115,135,205,230,258,408,409,665,703,915,934, %T A285224 3912,5031,5746,6078,6391,7979,11267,11296,14666,17555,22073,23583, %U A285224 30029,36150,51253,54365,57557,68475 %N A285224 Indices of primes in A027998. %C A285224 No other terms below 100000. %e A285224 11 is in the sequence because A027998(11) = 13309 is prime. %Y A285224 Cf. A027998, A035359. %K A285224 nonn %O A285224 1,1 %A A285224 _Vaclav Kotesovec_, Apr 14 2017