A083124 Continued fraction expansion of tanh(Pi/2).

0, 1, 11, 14, 4, 1, 1, 1, 3, 1, 295, 4, 4, 1, 5, 17, 2, 8, 2, 15, 3, 1, 1, 1, 5, 54, 4, 1, 2, 1, 1, 16, 2, 2, 2, 5, 1, 1, 2, 1, 82, 1, 6, 1, 1, 1, 1, 3, 1, 1, 4, 1, 3, 3, 1, 5, 1, 1, 1, 282, 1, 5, 1, 1, 1, 1, 2, 10, 2, 1, 39, 1, 1, 5, 2, 1, 6, 4, 1, 22, 1, 1, 6, 1, 3, 5, 3, 1, 2, 9, 1, 3, 6, 23, 1, 1, 1, 14, 2

Offset

0,3

References

J. M. Borwein, D. H. Bailey and R. Girgensohn, Experimentation in Mathematics, A K Peters, Ltd., Natick, MA, 2004. x+357 pp. See p. 11.

Links

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

Maple

with(numtheory): c := cfrac (tanh(Pi/2), 300, 'quotients');

Mathematica

ContinuedFraction[Tanh[Pi/2], 100] (* Paolo Xausa, Jul 04 2024 *)

Prog

(PARI)  contfrac(tanh(Pi/2)) \\ Michel Marcus, Apr 11 2021

Crossrefs

Cf. A060402.

Sequence in context: A257135 A357046 A100332 * A132991 A031167 A357937

Adjacent sequences: A083121 A083122 A083123 * A083125 A083126 A083127

Keyword

nonn,cofr,easy

Author

N. J. A. Sloane, Jun 02 2003

Status

approved