A212113 Denominators of convergents to the Dottie number, A003957

1, 1, 3, 4, 19, 23, 939, 962, 9597, 39350, 88297, 127647, 2003002, 4133651, 51606814, 55740465, 1222156579, 1277897044, 22946406327, 1194491026048, 3606419484471, 4800910510519, 32411882547585

Offset

0,3

Links

G. C. Greubel, Table of n, a(n) for n = 0..1000

Eric Weisstein's World of Mathematics, Dottie Number

Mathematica

z = FindRoot[Cos[x] == x, {x, 0, 1}, WorkingPrecision -> 10000][[1, -1]]; Denominator[Convergents[z, 100]]

Crossrefs

Cf. A003957, A212112.

Sequence in context: A042175 A041703 A036253 * A196133 A330436 A025089

Adjacent sequences: A212110 A212111 A212112 * A212114 A212115 A212116

Keyword

nonn,frac

Author

Ben Branman, May 01 2012

Status

approved