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A012923
sech(arcsin(x)+sin(x))=1-4/2!*x^2+80/4!*x^4-4024/6!*x^6+373376/8!*x^8...
0
1, -4, 80, -4024, 373376, -55810464, 12218736768, -3690395100032, 1469402675519488, -746064489482211840, 470375829415840688128, -360567791801354924107776, 330231250494338680414994432
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Sequence in context:
A102063
A002436
A013031
*
A012922
A013090
A012042
Adjacent sequences:
A012920
A012921
A012922
*
A012924
A012925
A012926
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified May 21 12:49 EDT 2024. Contains 372736 sequences. (Running on oeis4.)