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A084305
Continued fraction expansion of tanh(tanh(1)).
0
0, 1, 1, 1, 3, 1, 5, 3, 1, 2, 85, 1, 2, 2, 2, 1, 1, 1, 2, 5, 1, 7, 1, 1, 4, 1, 4, 1, 1, 1, 1, 6, 3, 1, 3, 3, 2, 1, 9, 12, 16, 4, 1, 1, 1, 2, 1, 2, 1, 49, 3, 7, 1, 2, 6, 1, 1, 1, 6, 1, 3, 2, 1, 1, 5, 2, 1, 199, 8, 1, 8, 1, 1, 2, 2, 1, 9, 1, 4, 4, 4, 2, 2, 1, 2, 1, 3, 1, 249, 1, 2, 2, 1, 1, 4, 1, 1, 135, 3, 2, 1
OFFSET
0,5
EXAMPLE
While cofrac of tanh(1)={0,1,3,5,7,11,..}, i.e. 0 and odd numbers, twice applying tanh() we get this sequence
MAPLE
with(numtheory); cfrac(tanh(tanh(tanh(1))), 300, 'quotients');
MATHEMATICA
ContinuedFraction[Tanh[Tanh[1]], 120] (* Harvey P. Dale, Jan 19 2024 *)
CROSSREFS
KEYWORD
cofr,easy,nonn
AUTHOR
Labos Elemer, Jun 04 2003
STATUS
approved