The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #11 Oct 28 2014 01:18:09
%S 1,0,9,4,7,1,2,2,0,6,3,4,4,9,0,6,9,1,3,6,9,2,4,5,9,9,9,3,3,9,9,6,2,4,
%T 3,5,9,6,3,0,0,6,8,4,3,1,0,0,9,0,7,9,4,8,2,8,8,1,7,1,1,0,6,3,5,6,0,3,
%U 9,7,4,6,4,3,8,0,6,0
%N Decimal expansion of the tetrahedral angle (in degrees).
%C Angle between chemical bonds in the sp^3 hybridization scheme.
%C Angle between any two non-parallel bonds in a diamond crystal.
%C For its value in radians and further comments, see A156546.
%H Stanislav Sykora, <a href="/A247412/b247412.txt">Table of n, a(n) for n = 3..2000</a>
%e 109.4712206344906913692459993399624359630068431009079482881711063560...
%t RealDigits[N[ArcCos[-1/3]*180/Pi, 100]][[1]] (* _Vaclav Kotesovec_, Sep 17 2014 *)
%o (PARI) acos(-1/3)*180/Pi
%Y Cf. A156546.
%K nonn,cons,easy
%O 3,3
%A _Stanislav Sykora_, Sep 16 2014