Cahen's constant is defined as
 |  |  |
(1)
|
 |  |  |
(2)
|
(OEIS A118227), where 
is the 
th term of Sylvester's sequence.
Cahen's Constant
See also
Sylvester's SequenceExplore with Wolfram|Alpha
References
Cahen, E. "Note sur un developpement des quantités numériques, qui presente quelque analogie avec celui des fractions continues." Nouv. Ann. Math. 10, 508-514, 1891.Shallit, J. and Davidson, J. L. "Continued Fractions for Some Alternating Series." Monatshefte Math. 111, 119-126, 1991.Sloane, N. J. A. Sequence A118227 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
Cahen's ConstantCite this as:
Weisstein, Eric W. "Cahen's Constant." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CahensConstant.html