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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A181675 A012053 A012162 * A012129 A012035 A012016

Adjacent sequences:  A012222 A012223 A012224 * A012226 A012227 A012228

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)