OFFSET
1,1
COMMENTS
Equals sqrt(2*sqrt(7*sqrt(2*sqrt(7*sqrt(2*sqrt(7)...))))). - Zak Seidov, Dec 19 2009
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000
EXAMPLE
3.0365889718756625194208095785056696355814539772481111232421416541691772684118...
MATHEMATICA
RealDigits[N[28^(1/3), 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 09 2012 *)
PROG
(PARI) sqrtn(28, 3) \\ Charles R Greathouse IV, Apr 14 2014
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved