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 A380109 #14 Jan 27 2025 16:50:28 %S A380109 3,1,4,0,8,4,5,0,7,0,4,2,2,5,3,5,2,1,1,2,6,7,6,0,5,6,3,3,8,0,2,8,1,6, %T A380109 9,0,1,4,0,8,4,5,0,7,0,4,2,2,5,3,5,2,1,1,2,6,7,6,0,5,6,3,3,8,0,2,8,1, %U A380109 6,9,0,1,4,0,8,4,5,0,7,0,4,2,2,5,3,5,2,1,1,2,6,7,6,0,5,6,3,3,8,0 %N A380109 Decimal expansion of 223/71. %C A380109 This constant is a lesser limit to the value of Pi calculated by Archimedes considering 96-gons. %C A380109 Apart from the first digit the same as A021075. - _R. J. Mathar_, Jan 17 2025 %D A380109 Jan Gullberg, Mathematics from the Birth of Numbers, W. W. Norton & Co., NY & London, 1997, §3.6 The Quest for Pi and §13.3 Solving Triangles, pp. 90, 479. %F A380109 Equals 3 + 10/71. %e A380109 3.1408450704225352112676056338028169014084507042... %t A380109 RealDigits[3+10/71,10,100][[1]] %Y A380109 Cf. A000796, A021075, A068028 (greater limit). %K A380109 nonn,cons,easy %O A380109 1,1 %A A380109 _Stefano Spezia_, Jan 12 2025