OFFSET
0,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..10000
Eric Weisstein's World of Mathematics, Power Tower
Wikipedia, Tetration
FORMULA
Equals exp(1)*exp(-2*LambertW(1))/(1+LambertW(1)).
EXAMPLE
0.557919282255416046773864733137284325268059522147000568856861678665669168...
MATHEMATICA
RealDigits[E*Exp[-2*LambertW[1]]/(1+LambertW[1]), 10, 100][[1]] (* G. C. Greubel, Sep 09 2018 *)
PROG
(PARI) exp(1)*exp(-2*lambertw(1))/(1+lambertw(1)) \\ Michel Marcus, Mar 16 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Alois P. Heinz, Mar 16 2018
STATUS
approved