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 A129269 #10 Nov 21 2024 08:06:25 %S A129269 1,9,8,6,9,0,1,1,0,3,4,9,2,4,1,4,0,6,4,7,4,6,3,6,9,1,5,9,5,0,2,0,6,9, %T A129269 6,8,2,2,1,3,0,8,7,9,4,2,2,4,4,5,3,7,7,3,0,2,1,2,6,3,2,2,2,2,8,5,4,8, %U A129269 5,6,4,7,8,9,5,9,7,2,3,6,7,5,1,2,9,3,5,3,4,4,6,4,5,4,3,4,1,6,9 %N A129269 Decimal expansion of arcsinh(1/5). %H A129269 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A129269 0.19869011034924140647463691595020696822130879422445377302126... %t A129269 RealDigits[ArcSinh[1/5], 10, 105][[1]] (* _Amiram Eldar_, May 02 2023 *) %o A129269 (PARI) asinh(.2) \\ _Charles R Greathouse IV_, Nov 21 2024 %Y A129269 Decimal expansion of arcsinh(1/k): A091648 (k=1), A002390 (k=2), A129187(k=3), A129200 (k=4). %K A129269 nonn,cons %O A129269 0,2 %A A129269 _N. J. A. Sloane_, Jul 27 2008