A021039 - OEIS

%I #24 Mar 11 2026 15:06:18

%S 0,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,

%T 7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,

%U 8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8

%N Decimal expansion of 1/35.

%C Same decimal period as A020806. - _R. J. Mathar_, Feb 13 2012

%C 1/35 = A394169 / (4*Pi/3) is the mean volume of a tetrahedron whose vertices are uniformly and independently selected at random on the surface of a sphere of unit volume. - _Amiram Eldar_, Mar 11 2026

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,-1,1).

%e 0.0285714285714285..

%t Join[{0},RealDigits[1/35,10,120][[1]]] (* or *) PadRight[{0},120,{4,2,8,5,7,1}] (* _Harvey P. Dale_, Oct 15 2013 *)

%Y Cf. A020806, A394169.

%K nonn,cons

%O 0,2

%A _N. J. A. Sloane_