A011017 - OEIS

%I #12 Sep 23 2018 11:03:29

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

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

%U 2,8,9,2,9,4,8,2,4,9,2,7,2,2,0,1,1,8,2,8,8,4,8,8,2,1,7,8,6,1,6

%N Decimal expansion of 4th root of 21.

%H Ivan Panchenko, <a href="/A011017/b011017.txt">Table of n, a(n) for n = 1..1000</a>

%t RealDigits[Surd[21,4],10,120][[1]] (* _Harvey P. Dale_, Sep 23 2018 *)

%o (PARI) sqrtn(21,4) \\ _Charles R Greathouse IV_, Apr 15 2014

%K nonn,cons

%O 1,1

%A _N. J. A. Sloane_.