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 A144667 #14 Feb 16 2025 08:33:09
%S A144667 9,9,1,8,7,8,4,0,7,6,5,8,2,9,4,8,1,6,9,6,6,4,2,6,9,2,7,7,8,4,8,8,9,3,
%T A144667 4,0,4,8,0,4,0,6,2,9,2,0,6,6,3,5,4,2,2,8,7,4,5,0,5,8,3,0,7,6,1,9,5,8,
%U A144667 1,8,4,1,2,5,0,3,9,1,6,8,5,9,7,3,1,0,8,1,8,9,9,1,6,2,5,0,8,8,3,6,7,0,7,2,8
%N A144667 Decimal expansion of product_{n=2..infinity} (n^8-1)/(n^8+1).
%H A144667 J. Borwein et al., <a href="http://www.ams.org/mathscinet-getitem?mr=2051473">Experimentation in Mathematics</a>, 2004, section 1.2.
%H A144667 E. W. Weisstein, <a href="https://mathworld.wolfram.com/InfiniteProduct.html">Infinite Product</a>, MathWorld.
%F A144667 Equals 2*A175619/A334411. - _Vaclav Kotesovec_, Apr 27 2020
%e A144667 0.9918784076582948169664...
%t A144667 RealDigits[-1/4*Pi*Csc[(-1)^(1/8)*Pi]*Csc[(-1)^(3/8)*Pi]*Csc[(-1)^(5/8)*Pi] * Csc[(-1)^(7/8)*Pi]*Sin[(-1)^(1/4)*Pi]*Sin[(-1)^(3/4)*Pi]*Sinh[Pi] // Re, 10, 105] // First (* _Jean-François Alcover_, Feb 11 2013 *)
%Y A144667 Cf. A090986.
%K A144667 nonn,cons
%O A144667 0,1
%A A144667 _R. J. Mathar_, Feb 01 2009
%E A144667 More terms from _Jean-François Alcover_, Feb 11 2013