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A102061
Numerators of e.g.f.: tan(arccosh(x)) = cot(arcsinh(x)).
1
-1, -1, 125, -2095, 34195, -33495775, 2103412025, -417444454375, 4782399123480875, -542199533615744875, 325816336080575624375, -48225269288311831665625, 6435989445301225961328125
OFFSET
1,3
EXAMPLE
tan(arccosh(x)) = 1/x - 1/6*x - 1/12*x^3/3! + 125/126*x^5/5! - ...
CROSSREFS
Denominators are in A102062.
Sequence in context: A342349 A017043 A255181 * A373007 A080169 A017127
KEYWORD
sign,frac
AUTHOR
Ralf Stephan, Dec 28 2004
STATUS
approved