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A012556
arcsin(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4+230/6!*x^6-7880/8!*x^8...
0
2, -4, 230, -7880, 922378, -104579660, 22872643950, -5494080273552, 1980593407445778, -817099673512164244, 445251089168585478902, -279905701143388803184984, 216483300093818109473976346
OFFSET
0,1
CROSSREFS
Sequence in context: A012666 A012612 A012560 * A329418 A018729 A009800
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved