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A012996
sech(arctan(x)+arcsin(x))=1-4/2!*x^2+88/4!*x^4-5110/6!*x^6...
0
1, -4, 88, -5110, 553160, -96580250, 24721393700, -8728515353350, 4063560953062000, -2412185091080859250, 1778146182982493577500, -1593628484999043797378750, 1706481881516410825432385000
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Sequence in context:
A012946
A013101
A013067
*
A195373
A065754
A244013
Adjacent sequences:
A012993
A012994
A012995
*
A012997
A012998
A012999
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified April 19 17:39 EDT 2024. Contains 371797 sequences. (Running on oeis4.)