OFFSET
1,2
REFERENCES
Jerome Spanier and Keith B. Oldham, "Atlas of Functions", Hemisphere Publishing Corp., 1987, chapter 31, page 291.
FORMULA
Equals log(Pi + sqrt(Pi^2 + 1)) = log(A188725).
Equals Pi*Integral_{x=0..1} 1/sqrt((Pi^2)*x^2 + 1) dx.
EXAMPLE
1.862295743310848219888361325182620574902674184961554765612879514423...
MATHEMATICA
RealDigits[ArcSinh[Pi], 10, 105][[1]]
PROG
(PARI) asinh(Pi) \\ Michel Marcus, Feb 26 2023
CROSSREFS
KEYWORD
AUTHOR
Wolfe Padawer, Feb 26 2023
STATUS
approved