OFFSET
1,1
LINKS
Steven R. Finch, Mathematical Constants II, Encyclopedia of Mathematics and Its Applications, Cambridge University Press, Cambridge, 2018, p. 187.
FORMULA
Equals limit n->infinity (A204249(n)/(n!)^2)^(1/n).
Equals -2*LambertW(-1, -1/(2*exp(1/2)))^2 / (1 + 2*LambertW(-1, -1/(2*exp(1/2)))). - Vaclav Kotesovec, Jun 13 2021
EXAMPLE
2.4554074822841279493757674026201760989493526408839235880697056011282...
MATHEMATICA
RealDigits[-2*LambertW[-1, -1/(2*Exp[1/2])]^2 / (1 + 2*LambertW[-1, -1/(2*Exp[1/2])]), 10, 120][[1]] (* Vaclav Kotesovec, Jun 13 2021 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Vaclav Kotesovec, Dec 01 2016
EXTENSIONS
More digits from Vaclav Kotesovec, Jun 13 2021
STATUS
approved