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

Offset: 1

Author

Zak Seidov, Mar 23 2005

Keywords

• cons
• nonn

Examples

			1.26941540730979227998641990961367779262421421990234...
		

Crossrefs

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

Programs

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 *)

PARI

solve(x=1,2,x^4^x-4) \\ Charles R Greathouse IV, Jun 08 2015

Extensions

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