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A198675 Decimal expansion of the absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x)+cos(6x). 3
1, 9, 4, 0, 5, 8, 9, 2, 1, 6, 9, 0, 2, 4, 8, 8, 0, 2, 0, 9, 6, 2, 5, 6, 8, 6, 3, 9, 3, 9, 1, 3, 8, 7, 2, 5, 3, 0, 3, 0, 5, 9, 1, 5, 0, 6, 7, 7, 8, 7, 7, 4, 8, 5, 1, 1, 8, 5, 9, 3, 8, 3, 3, 8, 7, 9, 7, 0, 1, 4, 2, 8, 5, 3, 6, 0, 1, 0, 3, 3, 6, 7, 0, 5, 1, 8, 4, 2, 7, 9, 4, 3, 2, 9, 3, 2, 9, 0, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A196361 for a guide to related sequences.

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

x=0.6926737452063682445569036306595182001...

min=-1.940589216902488020962568639391387253030...

MATHEMATICA

n = 6; 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]  (* A198675 *)

RealDigits[v]  (* A198676 *)

Plot[s[t], {t, -3 Pi, 3 Pi}, PlotRange -> {-2, 6}]

CROSSREFS

Cf. A196361, A198676.

Sequence in context: A198111 A194562 A239349 * A203131 A259484 A021918

Adjacent sequences:  A198672 A198673 A198674 * A198676 A198677 A198678

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 28 2011

STATUS

approved

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Last modified March 25 08:15 EDT 2019. Contains 321469 sequences. (Running on oeis4.)