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 A285219 #8 Nov 19 2017 17:20:20 %S A285219 5,6,7,8,9,11,13,22,28,29,31,38,47,53,56,59,63,64,76,85,88,91,110,111, %T A285219 124,135,165,202,210,214,234,243,256,262,280,322,335,346,438,443,458, %U A285219 463,508,580,590,696,790,865,903,951,993,996,1004,1163,1338,1396 %N A285219 Indices of primes in A003105. %H A285219 Vaclav Kotesovec, <a href="/A285219/b285219.txt">Table of n, a(n) for n = 1..373</a> %e A285219 28 is in the sequence because A003105(28) = 47 is prime. %Y A285219 Cf. A003105, A035359, A046063, A265835. %K A285219 nonn %O A285219 1,1 %A A285219 _Vaclav Kotesovec_, Apr 14 2017