OFFSET
1,1
FORMULA
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
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Dec 06 2023
STATUS
approved