A201404 - OEIS

A201404

Decimal expansion of x satisfying x^2 + 9 = sec(x) and 0 < x < Pi.

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

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

OFFSET

1,2

COMMENTS

See A201397 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

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

EXAMPLE

x=1.4813466126297176759765368415795652303033000...

MATHEMATICA

a = 1; c = 9;

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