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A012294 sech(sin(x)*exp(x))=1-1/2!*x^2-6/3!*x^3-15/4!*x^4+60/5!*x^5... 0
1, 0, -1, -6, -15, 60, 1023, 6062, -9247, -652680, -7332289, -13792350, 994947921, 19248140340, 119312444223, -2747842718122, -91993600741951, -1070543140984080, 10423240065585023, 710021632610736714 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

CROSSREFS

Sequence in context: A145638 A067665 A012595 * A069750 A035077 A032164

Adjacent sequences:  A012291 A012292 A012293 * A012295 A012296 A012297

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.