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 A102808 #12 Mar 27 2021 18:01:48
%S A102808 1,2,3,7,10,11,16,17,26,59,118,178,353,411,505,535,545,702,941,8738,
%T A102808 11498,15769,22544,28901,40444,48479,82800
%N A102808 Numbers k such that the k-th prime is in A057468.
%t A102808 PrimePi[{ list from A057468 }] (* _Robert G. Wilson v_, Mar 03 2005 *)
%Y A102808 Cf. A057468.
%K A102808 nonn,more
%O A102808 1,2
%A A102808 Ali A. Tanara (tanara(AT)khayam.ut.ac.ir), Feb 26 2005
%E A102808 More terms from _Robert G. Wilson v_, Mar 03 2005
%E A102808 a(21)-a(27) from _Robert Price_, Mar 27 2021