A023972 - OEIS

%I #10 Mar 13 2015 18:56:08

%S 0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,

%T 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,

%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1

%N First bit in fractional part of binary expansion of 5th root of n.

%t Array[ Function[ n, RealDigits[ N[ Power[ n, 1/5 ], 10 ], 2 ]// (#[ [ 1, #[ [ 2 ] ]+1 ] ])& ], 110 ]

%K nonn,base

%O 1,1

%A _N. J. A. Sloane_, _Olivier Gérard_