OFFSET
1,2
EXAMPLE
1.26941540730979227998641990961367779262421421990234...
MAPLE
Digits := 120 ; x := 1.2694 ; for i from 1 to 400 do x := 2^(2^(1-2*x)) ; print(x) ; od: read("transforms3") ; CONSTTOLIST(x) ; # R. J. Mathar, May 19 2009
MATHEMATICA
RealDigits[x /. FindRoot[x^(4^x) == 4, {x, 1}, WorkingPrecision -> 120]][[1]] (* Amiram Eldar, May 04 2023 *)
PROG
(PARI) solve(x=1, 2, x^4^x-4) \\ Charles R Greathouse IV, Jun 08 2015
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Zak Seidov, Mar 23 2005
EXTENSIONS
More digits from R. J. Mathar, May 19 2009
STATUS
approved