A197806 - OEIS

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A197806

Decimal expansion of x>0 having x^2=2*cos(x).

1, 0, 2, 1, 6, 8, 9, 9, 5, 4, 0, 9, 2, 1, 8, 5, 2, 2, 0, 3, 1, 5, 5, 7, 0, 2, 8, 7, 9, 5, 7, 5, 9, 1, 6, 0, 6, 4, 7, 7, 2, 2, 6, 0, 3, 6, 7, 2, 4, 5, 8, 6, 4, 8, 3, 1, 5, 7, 6, 0, 9, 1, 9, 2, 9, 7, 6, 1, 6, 7, 7, 6, 8, 7, 5, 6, 2, 3, 1, 5, 3, 7, 7, 5, 2, 7, 4, 3, 0, 0, 8, 8, 4, 9, 3, 7, 7, 6, 7

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

See A197737 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

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

EXAMPLE

x=1.0216899540921852203155702879575916064772260...

MATHEMATICA

a = 1; b = 0; c = 2;

f[x_] := a*x^2 + b*x; g[x_] := c*Cos[x]