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 A083124 #24 Mar 09 2025 05:12:04 %S A083124 0,1,11,14,4,1,1,1,3,1,295,4,4,1,5,17,2,8,2,15,3,1,1,1,5,54,4,1,2,1,1, %T A083124 16,2,2,2,5,1,1,2,1,82,1,6,1,1,1,1,3,1,1,4,1,3,3,1,5,1,1,1,282,1,5,1, %U A083124 1,1,1,2,10,2,1,39,1,1,5,2,1,6,4,1,22,1,1,6,1,3,5,3,1,2,9,1,3,6,23,1,1,1,14,2 %N A083124 Continued fraction expansion of tanh(Pi/2). %D A083124 J. M. Borwein, D. H. Bailey and R. Girgensohn, Experimentation in Mathematics, A K Peters, Ltd., Natick, MA, 2004. x+357 pp. See p. 11. %H A083124 Amiram Eldar, <a href="/A083124/b083124.txt">Table of n, a(n) for n = 0..10000</a> %p A083124 with(numtheory): c := cfrac (tanh(Pi/2),300,'quotients'); %t A083124 ContinuedFraction[Tanh[Pi/2], 100] (* _Paolo Xausa_, Jul 04 2024 *) %o A083124 (PARI) contfrac(tanh(Pi/2)) \\ _Michel Marcus_, Apr 11 2021 %Y A083124 Cf. A060402, A084304, A367960 (decimal expansion). %K A083124 nonn,cofr,easy %O A083124 0,3 %A A083124 _N. J. A. Sloane_, Jun 02 2003