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

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, 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, 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

Offset

1,2

Links

Table of n, a(n) for n=1..106.

Michael Ian Shamos, Shamos's catalog of the real numbers, (2011) [page 520, but misprint in the product 3*k should be 3*k^2].

Formula

Equals Product_{k>=1} (1 + 1/(3*k^2)).

Example

1.6459025152253961193544118815663276416192231065463...

Mathematica

RealDigits[Sqrt[3]*Sinh[Pi/Sqrt[3]]/Pi, 10, 100][[1]] (* Amiram Eldar, Aug 09 2022 *)

Prog

(PARI) print((sqrt(3)/Pi) * sinh(Pi/sqrt(3)))

Crossrefs

Cf. A000796, A002194, A334401.

Sequence in context: A199385 A177159 A361605 * A317866 A309977 A349700

Adjacent sequences: A356476 A356477 A356478 * A356480 A356481 A356482

Keyword

nonn,cons

Author

Christoph B. Kassir, Aug 08 2022

Status

approved