A104752 - OEIS

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A104752

Decimal expansion of solution to x^(4^x) = 4.

1, 2, 6, 9, 4, 1, 5, 4, 0, 7, 3, 0, 9, 7, 9, 2, 2, 7, 9, 9, 8, 6, 4, 1, 9, 9, 0, 9, 6, 1, 3, 6, 7, 7, 7, 9, 2, 6, 2, 4, 2, 1, 4, 2, 1, 9, 9, 0, 2, 3, 4, 7, 6, 2, 5, 4, 7, 6, 6, 3, 8, 5, 7, 6, 1, 9, 3, 6, 1, 6, 0, 7, 9, 0, 4, 4, 7, 4, 1, 5, 3, 8, 1, 8, 7, 5, 4, 7, 0, 2, 3, 1, 1, 5, 4, 1, 8, 4, 3, 6, 7, 7, 2, 1, 7

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..105.

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

Cf. A103561, A104750, A104751, A104753, A104754, A104755, A104756, A104757.

Sequence in context: A197579 A179275 A215498 * A343745 A183000 A170821

Adjacent sequences: A104749 A104750 A104751 * A104753 A104754 A104755

KEYWORD

cons,nonn

AUTHOR

Zak Seidov, Mar 23 2005

EXTENSIONS

More digits from R. J. Mathar, May 19 2009

STATUS

approved