cp's OEIS Frontend

A356479 Decimal expansion of (sqrt(3)/Pi) * sinh(Pi/sqrt(3)).

%I A356479 #37 Aug 13 2022 15:57:29
%S A356479 1,6,4,5,9,0,2,5,1,5,2,2,5,3,9,6,1,1,9,3,5,4,4,1,1,8,8,1,5,6,6,3,2,7,
%T A356479 6,4,1,6,1,9,2,2,3,1,0,6,5,4,6,3,8,3,3,1,3,5,7,7,9,6,6,4,5,2,6,8,1,7,
%U A356479 4,3,1,1,1,5,8,6,4,4,2,2,1,3,4,8,7,1,0,3,8,6,2,9,1,8,9,7,4,8,9,4,8,9,0,6,5,7
%N A356479 Decimal expansion of (sqrt(3)/Pi) * sinh(Pi/sqrt(3)).
%H A356479 Michael Ian Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">Shamos's catalog of the real numbers</a>, (2011) [page 520, but misprint in the product 3*k should be 3*k^2].
%F A356479 Equals Product_{k>=1} (1 + 1/(3*k^2)).
%e A356479 1.6459025152253961193544118815663276416192231065463...
%t A356479 RealDigits[Sqrt[3]*Sinh[Pi/Sqrt[3]]/Pi, 10, 100][[1]] (* _Amiram Eldar_, Aug 09 2022 *)
%o A356479 (PARI) print((sqrt(3)/Pi) * sinh(Pi/sqrt(3)))
%Y A356479 Cf. A000796, A002194, A334401.
%K A356479 nonn,cons
%O A356479 1,2
%A A356479 _Christoph B. Kassir_, Aug 08 2022