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 A201405 Decimal expansion of x satisfying x^2 + 10 = sec(x) and 0 < x < Pi. 2
 1, 4, 8, 8, 8, 4, 9, 2, 8, 9, 1, 6, 4, 2, 2, 2, 1, 0, 6, 3, 3, 0, 9, 9, 6, 1, 5, 8, 9, 4, 1, 3, 3, 4, 3, 7, 5, 5, 3, 8, 1, 3, 6, 3, 6, 5, 0, 9, 7, 0, 2, 0, 5, 2, 1, 5, 5, 2, 9, 0, 4, 1, 0, 4, 8, 6, 7, 8, 8, 3, 4, 7, 3, 1, 4, 6, 5, 2, 1, 6, 9, 2, 1, 8, 2, 4, 4, 3, 0, 4, 5, 1, 4, 2, 8, 1, 5, 3, 1 (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=1.48884928916422210633099615894133... MATHEMATICA a = 1; c = 10; f[x_] := a*x^2 + c; g[x_] := Sec[x] Plot[{f[x], g[x]}, {x, 0, Pi}, {AxesOrigin -> {0, 0}}] r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110] RealDigits[r] (* A201405 *) CROSSREFS Cf. A201397. Sequence in context: A032566 A330555 A200357 * A331067 A040012 A054006 Adjacent sequences: A201402 A201403 A201404 * A201406 A201407 A201408 KEYWORD nonn,cons AUTHOR Clark Kimberling, Dec 01 2011 STATUS approved

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Last modified September 27 02:54 EDT 2023. Contains 365669 sequences. (Running on oeis4.)