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A102076 Numerators of e.g.f. cosec(artanh(x)). 1
-1, -1, 125, 5585, 146835, 199553825, 16151898425, 3951808537625, 54159749674008875, 7187045526725631125, 4971794789793419144375, 836133262846273312334375, 125448452657856727433328125 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

EXAMPLE

cosec(artanh(x)) = 1/x - x/6 - 1/12*x^3/3! + 125/126x^5/5! +...

cosech(arctan(x)) = 1/x + x/6 - 1/12*x^3/3! - 125/126x^5/5! +...

CROSSREFS

Denominators are in A102077.

Sequence in context: A017451 A017583 A046232 * A030695 A121005 A067972

Adjacent sequences:  A102073 A102074 A102075 * A102077 A102078 A102079

KEYWORD

sign,frac

AUTHOR

Ralf Stephan, Dec 31 2004

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.