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 A319267 #10 Aug 04 2019 04:08:13 %S A319267 5,7,10,12,13,14,15,16,17,19,23,24,25,27,29,32,36,37,38,39,44,47,50, %T A319267 56,60,68,71,73,75,78,80,104,107,112,118,146,158,165,169,185,193,199, %U A319267 202,206,213,215,232,246,252,269,274,291,314,321,328,336,358,360 %N A319267 Indices of primes in sequence A000586. %H A319267 Vaclav Kotesovec, <a href="/A319267/b319267.txt">Table of n, a(n) for n = 1..4264</a> %e A319267 29 is in the sequence because A000586(29) = 7 is prime. %Y A319267 Cf. A000586, A319264, A319266. %K A319267 nonn %O A319267 1,1 %A A319267 _Vaclav Kotesovec_, Sep 16 2018