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 A144665 #16 Feb 16 2025 08:33:09
%S A144665 9,6,5,9,0,6,0,8,5,7,6,2,1,5,9,2,1,2,1,5,7,0,6,2,3,7,0,5,5,0,4,5,2,0,
%T A144665 4,0,8,5,7,2,6,8,1,3,3,6,5,0,9,7,4,5,8,9,2,5,6,2,9,6,6,3,9,4,9,2,7,3,
%U A144665 7,7,0,2,4,9,0,0,7,5,7,3,0,9,3,2,7,1,1,1,0,7,7,7,1,6,8,8,1,1,1,4,7,4,8,5,0
%N A144665 Decimal expansion of product_{n=2..infinity} (n^6-1)/(n^6+1).
%H A144665 J. Borwein et al., <a href="http://www.ams.org/mathscinet-getitem?mr=2051473">Experimentation in Mathematics</a>, 2004, section 1.2.
%H A144665 E. W. Weisstein, <a href="https://mathworld.wolfram.com/InfiniteProduct.html">Infinite Product</a>, MathWorld.
%F A144665 c=(Pi/3)*(cosh(sqrt(3)*Pi)+1)/(sinh(Pi)*(cosh(Pi)-cos(sqrt(3)*Pi))).
%e A144665 0.96590608576215921215...
%t A144665 RealDigits[ -((Pi*(1 + Cosh[Sqrt[3]*Pi])*Csch[Pi])/(3*(Cos[Sqrt[3]*Pi] - Cosh[Pi]))), 10, 105] // First (* _Jean-François Alcover_, Feb 11 2013 *)
%o A144665 (PARI) Pi*(cosh(sqrt(3)*Pi)+1)/sinh(Pi)/(cosh(Pi)-cos(sqrt(3)*Pi))/3 \\ - _M. F. Hasler_, Feb 23 2013
%Y A144665 Cf. A090986.
%K A144665 nonn,cons
%O A144665 0,1
%A A144665 _R. J. Mathar_, Feb 01 2009