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A309207 Continued fraction expansion of (3 tanh (3 tanh (3 tanh (...)))). 2
2, 1, 64, 2, 1, 1, 1, 3, 4, 1, 2, 3, 1, 272213, 1, 2, 1, 16, 110, 4, 4, 4, 1, 1, 1, 4, 1, 1, 916, 21, 11, 6, 2, 2, 2, 1, 2, 16, 3, 1, 1, 2, 2, 9, 1, 2, 8, 2, 4, 3, 2, 2, 1, 9, 6, 5, 3, 1, 4, 2, 12, 17, 1, 3, 1, 3, 1, 1, 3, 1, 7, 1, 1, 2, 8, 2, 1, 1, 5, 11, 90, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

This is the continued fraction expansion of the constant defined in A309211.

LINKS

Table of n, a(n) for n=0..81.

W. M. Gosper, Material from Bill Gosper's Computers & Math talk, M.I.T., 1989, i+38+1 pages, annotated and scanned, included with the author's permission. (There are many blank pages because about half of the original pages were two-sided, half were one-sided.)

MATHEMATICA

ContinuedFraction[Reduce[x == 3 Tanh@x, x, Reals][[3, 2]], 33] (* Bill Gosper, Jul 30 2019 *)

CROSSREFS

Cf. A309208, A309211.

Sequence in context: A271442 A092650 A221194 * A104024 A233472 A284596

Adjacent sequences:  A309204 A309205 A309206 * A309208 A309209 A309210

KEYWORD

nonn,cofr

AUTHOR

N. J. A. Sloane, Jul 29 2019

EXTENSIONS

More terms from Daniel Suteu, Jul 30 2019

STATUS

approved

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Last modified September 30 18:12 EDT 2020. Contains 337440 sequences. (Running on oeis4.)