A347199 Decimal expansion of sin(1) * sinh(1).

9, 8, 8, 8, 9, 7, 7, 0, 5, 7, 6, 2, 8, 6, 5, 0, 9, 6, 3, 8, 2, 1, 2, 9, 5, 4, 0, 8, 9, 2, 6, 8, 6, 1, 8, 8, 6, 4, 2, 1, 4, 9, 6, 9, 5, 0, 3, 3, 1, 4, 7, 6, 0, 7, 5, 3, 6, 8, 1, 6, 0, 1, 0, 4, 2, 9, 7, 3, 5, 4, 4, 5, 7, 6, 9, 7, 2, 3, 0, 5, 0, 5, 9, 5, 1, 2, 1

Offset: 0

Author

Sean A. Irvine, Aug 22 2021

Keywords

• nonn
• cons

Examples

			0.9888977057628650963821295408926861886421496950...
		

References

• I. S. Gradshteyn and I. M. Ryzhik, Table of Integrals, Series and Products, Academic Press (1979), Eq. (1.413.1).

Links

• Michael I. Shamos, Shamos's catalog of the real numbers (2011).

Crossrefs

Cf. A049469, A073742.

Programs

Mathematica

RealDigits[Sin[1] * Sinh[1], 10, 120][[1]] (* Amiram Eldar, Jun 15 2023 *)

PARI

sin(1) * sinh(1) \\ Amiram Eldar, Jun 15 2023

Formula

Equals Sum_{k>=0} (-1)^k * 2^(2*k+1) / (4*k+2)!.

Equals Product_{k>=1} (1 - 1/(Pi^4*k^4)).

Equals 0F3(;3/4,5/4,3/2; -1/64). - R. J. Mathar, Aug 03 2024