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A012857
Numerator of [x^(2n)] of the Taylor expansion log(cosec(x)*arctan(x))= -x^2/6 +3*x^4/20 -50*x^6/567 +203*x^8/3240 -7472*x^10/155925 +...
1
0, -1, 3, -50, 203, -7472, 319561, -4725019, 8552625673, -2454640799284, 16155306808034, -5947223237624953, 147005475101499533, -2545370372470913809, 7441717839455761431719
OFFSET
0,3
COMMENTS
The inner function is cosec(x)*arctan(x) = 1- x^2/6 +59*x^4/360 -1723*x^6/15120 +164597*x^8/1814400 -...
CROSSREFS
Cf. A175671 (denominators).
Sequence in context: A356640 A350810 A356642 * A246221 A249249 A034201
KEYWORD
sign,frac
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Values replaced by numerators. - R. J. Mathar, Dec 20 2011
STATUS
approved