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 A380152 #4 Jan 13 2025 15:39:34 %S A380152 3,1,4,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1, %T A380152 8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1, %U A380152 8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1 %N A380152 Decimal expansion of 864/275. %C A380152 This approximation of Pi was calculated by Fibonacci studying the 96-gon and published in 1220 in Practica geometriae (see Gullberg). %D A380152 Jan Gullberg, Mathematics from the Birth of Numbers, W. W. Norton & Co., NY & London, 1997, ยง3.6 The Quest for Pi, p. 91. %e A380152 3.1418181818181818181818181818181818181818181818... %t A380152 RealDigits[864/275,10,100][[1]] %Y A380152 Cf. A000796, A068028, A380109. %K A380152 nonn,cons,easy %O A380152 1,1 %A A380152 _Stefano Spezia_, Jan 13 2025