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A012225
sinh(arctan(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+58001/9!*x^9...
0
1, -3, 41, -1243, 58001, -1956083, -740509639, 509169335477, -295854887910879, 189240977761969437, -139751997081117953719, 120179815628074668521797, -120043777513489781645646159
OFFSET
0,2
CROSSREFS
Sequence in context: A181675 A012053 A012162 * A012129 A012035 A012016
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved