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 A358989 #13 Dec 10 2022 08:09:41 %S A358989 3,1,4,1,5,9,1,9,5,3,1,3,4,5,8,8,7,3,7,7,5,3,5,3,8,2,0,9,3,7,0,0,4,2, %T A358989 4,8,1,5,5,9,5,8,2,2,5,4,3,4,1,3,0,5,6,1,7,9,1,7,6,5,6,4,2,8,4,2,2,0, %U A358989 8,4,5,3,2,5,2,7,7,1,4,8,4,4,1,9,0,9,7,2,7,2,3,5,1,0 %N A358989 Decimal expansion of 13*sqrt(146)/50. %C A358989 An approximation for Pi by C. G. Specht and Helen A. Merrill. %D A358989 Helen A. Merrill, Mathematical Excursions, Boston, Bruce Humphries, Inc., 1933. %H A358989 Herman C. Schepler, <a href="https://doi.org/10.2307/3029000">The Chronology of PI</a>, Mathematics Magazine, Vol. 23, No. 5 (May - Jun., 1950), pp. 279-283. %H A358989 C. G. Specht, <a href="https://eudml.org/doc/183131">Annäherungs-Construction des Kreis-Umfangs und Flächen-Inhalts</a>, Journal für die reine und angewandte Mathematik, Vol. 3 (1828), p. 83. %e A358989 3.1415919531345887377535382093700424815595822543413056179176564284220845325277... %t A358989 RealDigits[13*Sqrt[146]/50, 10, 120][[1]] (* _Amiram Eldar_, Dec 09 2022 *) %Y A358989 Cf. A000796 (Pi). %K A358989 nonn,cons %O A358989 1,1 %A A358989 _Jack Zhang_, Dec 09 2022