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

0,1

LINKS

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

CROSSREFS

Sequence in context: A012666 A012612 A012560 * A329418 A018729 A009800

Adjacent sequences: A012553 A012554 A012555 * A012557 A012558 A012559

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified November 28 05:56 EST 2022. Contains 358407 sequences. (Running on oeis4.)