Ubiquitous Constant
Let 
be Gauss's constant and 
be its multiplicative inverse. Then 
(OEIS A097057) is sometimes known as the ubiquitous constant (Spanier and Oldham 1987; Schroeder 1994; Finch 2003, p. 421).
REFERENCES:
Finch, S. R. Mathematical Constants. Cambridge, England: Cambridge University Press, 2003.
Keane, J. "Convex Hull Integrals and the 'Ubiquitous Constant.' " Unpublished note, 2000.
Schroeder, M. "How Probable is Fermat's Last Theorem?" Math. Intell. 16, 19-20, 1994.
Sloane, N. J. A. Sequence A097057 in "The On-Line Encyclopedia of Integer Sequences."
Spanier, J. and Oldham, K. B. "The Kelvin Functions." Ch. 55 in An Atlas of Functions. Washington, DC: Hemisphere, 1987.
