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A198673 Decimal expansion of the absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x). 3
1, 7, 2, 8, 7, 6, 8, 2, 0, 7, 3, 9, 3, 1, 6, 9, 9, 1, 8, 2, 5, 1, 2, 2, 8, 3, 1, 4, 5, 5, 5, 6, 5, 5, 7, 6, 7, 7, 7, 7, 2, 0, 0, 7, 9, 6, 1, 1, 8, 7, 1, 3, 9, 5, 4, 6, 1, 4, 5, 5, 5, 6, 2, 0, 7, 5, 3, 6, 0, 5, 7, 1, 4, 7, 2, 3, 3, 0, 0, 3, 0, 0, 4, 3, 4, 5, 0, 6, 6, 1, 5, 2, 8, 9, 2, 5, 4, 6, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See A196361 for a guide to related sequences.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

x=0.8192724134245426759067178580741783999...

min=-1.728768207393169918251228314555655767777...

MATHEMATICA

n = 5; 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] (* A198673 *)

RealDigits[v] (* A198674 *)

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

CROSSREFS

Cf. A196361, A198674.

Sequence in context: A259072 A107311 A048836 * A086236 A244354 A125126

Adjacent sequences:  A198670 A198671 A198672 * A198674 A198675 A198676

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 28 2011

STATUS

approved

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Last modified July 22 21:38 EDT 2019. Contains 325227 sequences. (Running on oeis4.)