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A012527
arctan(sinh(x)*sin(x))=2/2!*x^2-248/6!*x^6+766112/10!*x^10...
0
2, -248, 766112, -13434220928, 784153824645632, -115100516909469022208, 35709161573583248175767552, -20800482387908029348756471513088
OFFSET
0,1
CROSSREFS
Sequence in context: A027653 A024349 A012529 * A109118 A034313 A177320
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved