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A012105
arcsinh(arcsin(sinh(x)))=x+1/3!*x^3+9/5!*x^5+337/7!*x^7+20433/9!*x^9...
0
1, 1, 9, 337, 20433, 2146497, 334449049, 72730741137, 21072553238433, 7839688801269505, 3643403659959276585, 2068430144100589034577, 1408597220893698317848945, 1133327555472108223412440257
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..13.
CROSSREFS
Sequence in context:
A288547
A303208
A196883
*
A100569
A244503
A152553
Adjacent sequences:
A012102
A012103
A012104
*
A012106
A012107
A012108
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified June 4 00:30 EDT 2023. Contains 363118 sequences. (Running on oeis4.)