A367959 Decimal expansion of sinh(Pi/2).

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

Offset

1,1

Links

Table of n, a(n) for n=1..93.

Formula

Equals (Pi/2) * A308716 = A308715 - A049006.

Equals Product_{k>=1} (4*k^2+1)/(4*k^2-1). - Amiram Eldar, Dec 11 2023

Example

2.301298902307294873463040...

Maple

evalf(sinh(Pi/2)) ;

Mathematica

First[RealDigits[Sinh[Pi/2], 10, 100]] (* Paolo Xausa, Dec 06 2023 *)

Prog

(PARI) sinh(Pi/2) \\ Amiram Eldar, Dec 11 2023

Crossrefs

Cf. A308716, A308715, A049006.

Sequence in context: A351939 A170899 A221321 * A179392 A106730 A343713

Adjacent sequences: A367956 A367957 A367958 * A367960 A367961 A367962

Keyword

cons,nonn

Author

R. J. Mathar, Dec 06 2023

Status

approved