OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000 (a(5000) corrected by Sean A. Irvine)
FORMULA
Equals sqrt(2*sqrt(5*sqrt(2*sqrt(5*sqrt(2*sqrt(5)...))))). - Zak Seidov, Dec 19 2009
EXAMPLE
2.71441761659490657151808946967948920480510776948909695728436544280330855632876...
MATHEMATICA
RealDigits[N[20^(1/3), 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 06 2012 *)
RealDigits[CubeRoot[20], 10, 120][[1]] (* Harvey P. Dale, Dec 27 2023 *)
PROG
(PARI) sqrtn(20, 3) \\ Charles R Greathouse IV, Apr 14 2014
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved