OFFSET
1,2
COMMENTS
See A196361 for a guide to related sequences.
EXAMPLE
x=1.2929430585054266652256311954691354...
min(f(x))=-1.3155651547204494123522707...
MATHEMATICA
n = 3; f[t_] := Cos[t]; s[t_] := Sum[f[k*t], {k, 1, n}];
x = N[Minimize[s[t], t], 110]; u = Part[x, 1]
v = 2 Pi - t /. Part[x, 2]
RealDigits[u] (* A196361 *)
RealDigits[v] (* A198670 *)
Plot[s[t], {t, -3 Pi, 3 Pi}]
RealDigits[ ArcSin[ Sqrt[7 + Sqrt[7]/2]/3], 10, 99] // First (* Jean-François Alcover, Feb 15 2013 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Oct 28 2011
STATUS
approved