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 A356670 #23 Oct 13 2022 10:58:41 %S A356670 0,2,3,2,4,4,7,8,8,10,10,11,11,14,14,15,16,18,18,18,19,20,22 %N A356670 a(n) is the number of correct decimal digits of Pi obtained from the fraction A355622(n)/A355623(n). %e A356670 a(9) = 8 since A355622(9)/A355623(9) = 422334431/134433224 = 3.1415926690860... matches the first 8 digits of Pi: 3.1415926535897... %Y A356670 Cf. A000796, A355622, A355623, A356671. %K A356670 nonn,base,more %O A356670 1,2 %A A356670 _Stefano Spezia_, Aug 22 2022 %E A356670 a(19)-a(22) from _Stefano Spezia_, Oct 13 2022