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 A347201 #13 Dec 24 2024 00:59:19
%S A347201 9,8,7,7,6,5,9,4,5,9,9,2,7,3,5,5,2,7,0,6,9,1,3,4,0,7,2,0,7,8,9,4,2,6,
%T A347201 5,5,9,0,6,7,9,3,1,2,9,5,1,6,0,3,7,1,9,6,0,3,8,7,6,3,6,8,5,5,0,2,9,1,
%U A347201 3,7,2,3,0,9,3,0,1,1,6,2,9,3,9,9,7,6,2
%N A347201 Decimal expansion of sin(sqrt(2)).
%H A347201 Michael I. Shamos, <a href="https://citeseerx.ist.psu.edu/pdf/ae33a269baba5e8b1038e719fb3209e8a00abec5">Shamos's catalog of the real numbers</a> (2011).
%F A347201 Equals sqrt(2) * Sum_{n>=0} (-1)^n/A007019(n) = sqrt(2) * Sum_{n>=0} (-2)^n/(2*n+1)!. - _Amiram Eldar_, Jun 01 2023
%e A347201 0.98776594599273552706913407207894265590...
%t A347201 RealDigits[Sin[Sqrt[2]], 10, 120][[1]] (* _Amiram Eldar_, Jun 01 2023 *)
%Y A347201 Cf. A002193, A007019, A049469.
%K A347201 nonn,cons
%O A347201 0,1
%A A347201 _Sean A. Irvine_, Aug 22 2021