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 A099816 #18 Feb 14 2019 16:33:38
%S A099816 3,4,5,2,5,5,9,9,2,8,6,6,3,8,2,9,0,8,4,9,1,9,9,3,5,0,8,0,7,9,4,9,3,7,
%T A099816 1,4,6,8,2,8,9,6,8,3,8,5,4,1,7,6,9,2,4,0,6,1,2,2,0,6,7,9,8,4,0,5,0,8,
%U A099816 2,1,2,3,9,0,1,8,8,1,7,5,2,4,0,7,1,3,5,1,0,5,9,4,6,2,4,9,4,3,3,1,6,4,8,1,9
%N A099816 Bisection of A000796 (decimal expansion of Pi).
%H A099816 Jinyuan Wang, <a href="/A099816/b099816.txt">Table of n, a(n) for n = 1..10000</a>
%H A099816 Xavier Gourdon, <a href="https://jmhernandez.tech/pi/pi.htm">Computation of 16000 digits of Pi</a>.
%t A099816 Take[ RealDigits[Pi, 10, 220][[1]], {1, 220, 2}]
%Y A099816 Cf. A000796, A099817.
%K A099816 base,easy,nonn
%O A099816 1,1
%A A099816 _N. J. A. Sloane_, Nov 19 2004
%E A099816 a(54)-a(105) from _Jonathan Vos Post_, Mar 22 2006