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 A348784 #9 Nov 15 2021 16:58:22 %S A348784 7,8,11,19,20,28,37,47,51,53,58,63,81,99,101,115,116,136,146,151,153, %T A348784 159,169,176,188,197,213,215,223,230,233,255,274,276,282,302,318,341, %U A348784 347,357,359,369,386,396,405,420,440,448,460,472,492,507,514,520,529,535,539,558,578,584,612,625 %N A348784 Indices of primes in A347113. %H A348784 Chai Wah Wu, <a href="/A348784/b348784.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..669 from N. J. A. Sloane) %Y A348784 Cf. A347113, A348779. %K A348784 nonn %O A348784 1,1 %A A348784 _N. J. A. Sloane_, Nov 15 2021